Live/247 Rank/Illinois

Illinois 24/7 Rank

Every station in Illinois ranked by its 247 score out of 100: how reliably it reports, how accurate its readings are against a reference station, how they pass their checks and how they stand against the forecast, over the last seven days.

1,162 stations ranked43.4% sent every report dueranked October 4, 2026page 3 of 5Illinois instrumentsIllinois weather

A station is ranked once its week holds enough reports to measure: 12, or 3 days for a gauge that reports once a day. Of the 1,162 ranked here, 1,157 have a page of their own; the rest are platforms heard here that have not yet reported enough to be listed.

Every station, ranked

Rank	Station	Score	Network	County	Received	Reports	Arrives in	Longest silence
501	Lakewood 0.1 ENEIL-MCH-114	97.3	Volunteer	McHenry	100%	3 of 3	6.4 h	24 h
502	Oak Brook Pump StationOKBI2	97.2	Gauge	Du Page	100%	168 of 168	19 min	76 min
503	Bartlett - WWTPBRTI2	97.2	Gauge	Du Page	100%	168 of 168	19 min	76 min
503	Dupage County Rain At O'Hare AirportORDI2	97.2	Gauge	Cook	100%	168 of 168	19 min	76 min
505	Rock River AT ByronBYRI2	97.2	Gauge	Ogle	100%	168 of 168	20 min	60 min
506	Naperville - West Branch DupageNAWI2	97.2	Gauge	Will	100%	168 of 168	20 min	75 min
506	St Charles C Pwr Substation #6SCHI2	97.2	Gauge	Kane	100%	168 of 168	20 min	75 min
506	Dupage County Rain At SchaumburgSHMI2	97.2	Gauge	Cook	100%	168 of 168	20 min	75 min
509	Illinois River AT Kingston MinesKNGI2	97.2	Gauge	Peoria	100%	168 of 168	20 min	77 min
510	La Moine River AT ColmarCLMI2	97.2	Gauge	Mcdonough	100%	168 of 168	20 min	77 min
510	Mackinaw River 2 NW CongervilleCNGI2	97.2	Gauge	Woodford	100%	168 of 168	20 min	77 min
510	Mazon River 4 W Coal CityCOLI2	97.2	Gauge	Grundy	100%	168 of 168	20 min	77 min
510	Fox River AT DaytonDAYI2	97.2	Gauge	La Salle	100%	168 of 168	20 min	77 min
510	ElginETCI2	97.2	Gauge	Kane	100%	168 of 168	20 min	77 min
510	Du Page River AT PlainfieldNDRI2	97.2	Gauge	Will	100%	168 of 168	20 min	77 min
510	Fox RiverSELI2	97.2	Gauge	Kane	100%	168 of 168	20 min	77 min
510	SevilleSEVI2	97.2	Gauge	Fulton	100%	168 of 168	20 min	77 min
518	McCook ReservoirMCCI2	97.1	Gauge	Cook	97.0%	163 of 168	15 min	3 h
519	Illinois River AT BeardstownBEAI2	97.0	Gauge	Schuyler	99.4%	167 of 168	20 min	1.8 h
519	Boneyard Creek AT Urbana - UIUCBYAI2	97.0	Gauge	Champaign	99.4%	167 of 168	20 min	1.8 h
519	Illinois River 1 S La SalleLSLI2	97.0	Gauge	La Salle	99.4%	167 of 168	20 min	1.8 h
519	PeoriaPIAI2	97.0	Gauge	Peoria	99.4%	167 of 168	20 min	1.8 h
519	Rolling MeadowsROLI2	97.0	Gauge	Cook	99.4%	167 of 168	20 min	1.8 h
524	Fox River AT AlgonquinALGI2	97.0	Gauge	Mchenry	99.4%	167 of 168	20 min	2 h
524	Browns - Bonpas CreekBROI2	97.0	Gauge	Edwards	99.4%	167 of 168	20 min	2 h
524	Bellwood - Addison CreekBWDI2	97.0	Gauge	Cook	99.4%	167 of 168	20 min	2 h
524	Crab Orchard Creek AT Crab Orchard LakeCODI2	97.0	Gauge	Williamson	99.4%	167 of 168	20 min	2 h
524	Grassy Creek AT Devils Kitchen LakeDKLI2	97.0	Gauge	Williamson	99.4%	167 of 168	20 min	2 h
524	Kaskaskia River AT FicklinFCKI2	97.0	Gauge	Douglas	99.4%	167 of 168	20 min	2 h
524	Fondulac Creek AT East PeoriaFDCI2	97.0	Gauge	Tazewell	99.4%	167 of 168	20 min	2 h
524	Thorn Creek at GlenwoodGLWI2	97.0	Gauge	Cook	99.4%	167 of 168	20 min	2 h
524	Illinois River AT HenryHNYI2	97.0	Gauge	Marshall	99.4%	167 of 168	20 min	2 h
524	Hickory CreekJHCI2	97.0	Gauge	Will	99.4%	167 of 168	20 min	2 h
524	Little Grassy Creek AT Little Grassy LakeLGLI2	97.0	Gauge	Williamson	99.4%	167 of 168	20 min	2 h
524	LockportLOKI2	97.0	Gauge	Will	99.4%	167 of 168	20 min	2 h
524	Lock And DamMHYI2	97.0	Gauge	Mchenry	99.4%	167 of 168	20 min	2 h
524	Sangamon River AT SpringfieldSRSI2	97.0	Gauge	Sangamon	99.4%	167 of 168	20 min	2 h
524	Silver Creek AT TroyTRYI2	97.0	Gauge	Madison	99.4%	167 of 168	20 min	2 h
524	Dupage County Rain At Wheaton (Sewer Department)WHSI2	97.0	Gauge	DuPage	99.4%	167 of 168	20 min	2 h
524	Indian Creek 5 SW WyomingWYGI2	97.0	Gauge	Stark	99.4%	167 of 168	20 min	2 h
541	GreenviewGREI2	97.0	Gauge	Menard	99.4%	167 of 168	20 min	1.8 h
541	London MillsLNMI2	97.0	Gauge	Fulton	99.4%	167 of 168	20 min	1.8 h
543	Sangamon River AT DecaturDCRI2	97.0	Gauge	Macon	99.4%	167 of 168	20 min	2 h
543	Lisle - EB Dupage RiverEBDI2	97.0	Gauge	DuPage	99.4%	167 of 168	20 min	2 h
543	Mackinaw River AT Green ValleyGNVI2	97.0	Gauge	Tazewell	99.4%	167 of 168	20 min	2 h
543	LawrencevilleLAWI2	97.0	Gauge	Lawrence	99.4%	167 of 168	20 min	2 h
543	Vermilion River 3 NE LeonoreLNRI2	97.0	Gauge	La Salle	99.4%	167 of 168	20 min	2 h
543	McHenry - Boone CreekMBNI2	97.0	Gauge	McHenry	99.4%	167 of 168	20 min	2 h
543	Kankakee River AT MomenceMOMI2	97.0	Gauge	Kankakee	99.4%	167 of 168	20 min	2 h
543	OakfordOKFI2	97.0	Gauge	Menard	99.4%	167 of 168	20 min	2 h
551	ShabbonaSBNI2	96.9	Gauge	De Kalb	100%	168 of 168	20 min	85 min
552	QuincyUINI2	96.9	Gauge	Adams	99.4%	167 of 168	20 min	2 h
553	Chatham 1.5 EIL-SG-45	96.8	Volunteer	Sangamon	100%	3 of 3	7.4 h	24 h
554	Highland 1.0 EIL-MD-37	96.8	Volunteer	Madison	100%	3 of 3	7.4 h	24 h
555	Dupage County Rain At Naperville (Municipal Building)NPVI2	96.8	Gauge	DuPage	98.8%	166 of 168	19 min	2 h
556	Embarras River AT CamargoCMGI2	96.8	Gauge	Douglas	98.8%	166 of 168	20 min	2 h
556	Illinois River AT Copperas CreekCOPI2	96.8	Gauge	Fulton	98.8%	166 of 168	20 min	2 h
556	Liverpool - Chautauqua LakeCTQI2	96.8	Gauge	Mason	98.8%	166 of 168	20 min	2 h
556	East Alton Pump StationEANI2	96.8	Gauge	Madison	98.8%	166 of 168	20 min	2 h
556	Illinois River AT HavanaHAVI2	96.8	Gauge	Fulton	98.8%	166 of 168	20 min	2 h
556	Little Kickapoo Creek AT HeyworthHEYI2	96.8	Gauge	Mclean	98.8%	166 of 168	20 min	2 h
556	Lansing Ditch near LansingLDLI2	96.8	Gauge	Cook	98.8%	166 of 168	20 min	2 h
556	Bear Creek AT MarcellineMBRI2	96.8	Gauge	Adams	98.8%	166 of 168	20 min	2 h
556	Sinsinawa River 2 E MenomineeMENI2	96.8	Gauge	Jo Daviess	98.8%	166 of 168	20 min	2 h
556	Dupage County Rain At Dupage County AirportSCAI2	96.8	Gauge	DuPage	98.8%	166 of 168	20 min	2 h
556	Kickapoo Creek AT WaynesvilleWAYI2	96.8	Gauge	De Witt	98.8%	166 of 168	20 min	2 h
556	Wheeling - Buffalo CreekWHEI2	96.8	Gauge	Cook	98.8%	166 of 168	20 min	2 h
568	Naperville - Spring BrookSPGI2	96.8	Gauge	Will	98.8%	166 of 168	20 min	2 h
569	PoolALTI2	96.8	Gauge	Madison	96.1%	323 of 336	15 min	61 min
570	Harrisburg - Middle Fork SalineHRBI2	96.7	Gauge	Saline	98.8%	166 of 168	20 min	2 h
570	Kishwaukee River AT MarengoMRGI2	96.7	Gauge	Mchenry	98.8%	166 of 168	20 min	2 h
570	Sangamon River AT PetersburgPETI2	96.7	Gauge	Menard	98.8%	166 of 168	20 min	2 h
573	GoodenowGDWI2	96.7	Gauge	Will	98.2%	165 of 168	19 min	1.8 h
573	Illinois River AT MorrisMORI2	96.7	Gauge	Grundy	98.2%	165 of 168	19 min	1.8 h
575	Plum Creek AT CreteCPCI2	96.7	Gauge	Will	98.2%	165 of 168	19 min	2 h
575	Des Plaines River AT Des PlainesDSPI2	96.7	Gauge	Cook	98.2%	165 of 168	19 min	2 h
575	JohnsburgJHNI2	96.7	Gauge	Mchenry	98.2%	165 of 168	19 min	2 h
575	No.2MRSI2	96.7	Gauge	La Salle	98.2%	165 of 168	19 min	2 h
575	Palos Park 3SE - Tinley CreekPSPI2	96.7	Gauge	Cook	98.2%	165 of 168	19 min	2 h
575	Rock River AT RockfordRABI2	96.7	Gauge	Winnebago	98.2%	165 of 168	19 min	2 h
575	St Joseph - Spoon RiverSSJI2	96.7	Gauge	Champaign	98.2%	165 of 168	19 min	2 h
575	Embarras River AT Ste. MarieSTMI2	96.7	Gauge	Jasper	98.2%	165 of 168	19 min	2 h
575	WilmingtonWLMI2	96.7	Gauge	Will	98.2%	165 of 168	19 min	2 h
584	Pecatonica River AT ShirlandSIRI2	96.7	Gauge	Winnebago	95.8%	161 of 168	15 min	2 h
585	Bondville CRNBNDI2	96.6	Gauge	Champaign	100%	168 of 168	20 min	65 min
586	Lake ForestLAFI2	96.6	Gauge	Lake	98.2%	660 of 672	15 min	60 min
587	Lake Fork AT AtwoodATWI2	96.6	Gauge	Piatt	98.2%	165 of 168	20 min	2 h
587	BismarckBISI2	96.6	Gauge	Vermilion	98.2%	165 of 168	20 min	2 h
587	Sugar Creek AT BloomingtonBMII2	96.6	Gauge	Mclean	98.2%	165 of 168	20 min	2 h
587	Lisle - St Joseph CreekLISI2	96.6	Gauge	Du Page	98.2%	165 of 168	20 min	2 h
587	Willow Springs - Flag CreekWLSI2	96.6	Gauge	Cook	98.2%	165 of 168	20 min	2 h
592	Elkhorn Creek 2 NW PenrosePENI2	96.6	Gauge	Whiteside	98.2%	165 of 168	20 min	2 h
593	Oswego - Waubonsee CreekWBOI2	96.5	Gauge	Kendall	98.2%	165 of 168	20 min	2 h
594	Mill Creek AT MilanMLNI2	96.5	Gauge	Rock Island	95.2%	160 of 168	15 min	2 h
594	Olmstead LnD - Ohio RiverOLTI2	96.5	Gauge	Pulaski	95.2%	160 of 168	15 min	2 h
596	Busse Woods near Elk GroveEGVI2	96.4	Gauge	Cook	97.6%	164 of 168	20 min	2 h
597	Plainfield 1.7 WNWIL-WL-171	96.3	Volunteer	Will	100%	3 of 3	8.4 h	24 h
598	MorrisMOXI2	96.3	Gauge	Grundy	94.6%	159 of 168	15 min	2 h
598	Rock River AT RockfordRFDI2	96.3	Gauge	Winnebago	94.6%	159 of 168	15 min	2 h
600	Pecatonica River AT FreeportFEEI2	96.2	Gauge	Stephenson	100%	168 of 168	25 min	60 min
601	Dupage County Rain At LisleLIRI2	96.2	Gauge	DuPage	100%	168 of 168	25 min	62 min
602	Mill CreekOMCI2	96.2	Gauge	Lake	100%	168 of 168	25 min	62 min
603	Farmer City Rain GaugeFMRI2	96.2	Gauge	De Witt	97.6%	82 of 84	35 min	3 h
604	Sangamon River AT FisherFISI2	96.2	Gauge	Champaign	97.0%	163 of 168	19 min	2 h
604	New Minden - Little Crooked CreekLCCI2	96.2	Gauge	Washington	97.0%	163 of 168	19 min	2 h
604	Wanda - Indian CreekWDAI2	96.2	Gauge	Madison	97.0%	163 of 168	19 min	2 h
607	Kaskaskia River AT Cooks MillsCOKI2	96.1	Gauge	Coles	99.7%	335 of 336	25 min	45 min
608	West Okaw River AT LovingtonWORI2	96.0	Gauge	Moultrie	99.4%	334 of 336	25 min	60 min
609	Kaskaskia River AT Carlyle LakeCAYI2	96.0	Gauge	Clinton	99.4%	334 of 336	25 min	1.5 h
609	Kaskaskia River AT CowdenCWDI2	96.0	Gauge	Shelby	99.4%	334 of 336	25 min	1.5 h
609	East Fork Kaskaskia River 1 NNE FairmanFARI2	96.0	Gauge	Marion	99.4%	334 of 336	25 min	1.5 h
609	Silver Creek AT FreeburgFREI2	96.0	Gauge	St Clair	99.4%	334 of 336	25 min	1.5 h
609	Kaskaskia River AT FayettevilleFYEI2	96.0	Gauge	St Clair	99.4%	334 of 336	25 min	1.5 h
609	Mississippi River AT Gladstone LD18GLDI2	96.0	Gauge	Henderson	99.4%	334 of 336	25 min	1.5 h
609	Richland Creek 2 ESE HeckerHEKI2	96.0	Gauge	St Clair	99.4%	334 of 336	25 min	1.5 h
609	Crooked Creek AT HoffmanHOFI2	96.0	Gauge	Washington	99.4%	334 of 336	25 min	1.5 h
609	Hurricane Creek AT Mulberry GroveHRRI2	96.0	Gauge	Fayette	99.4%	334 of 336	25 min	1.5 h
609	Kaskaskia 7 ESE RamseyKSKI2	96.0	Gauge	Fayette	99.4%	334 of 336	25 min	1.5 h
609	Kaskaskia AT PoseyPOSI2	96.0	Gauge	Clinton	99.4%	334 of 336	25 min	1.5 h
609	ShelbyvilleSRCI2	96.0	Gauge	Shelby	99.4%	334 of 336	25 min	1.5 h
609	Kaskaskia River AT Venedy StationVDYI2	96.0	Gauge	Washington	99.4%	334 of 336	25 min	1.5 h
622	Big Muddy River 2 SW MurphysboroMURI2	96.0	Gauge	Jackson	99.4%	334 of 336	25 min	60 min
623	CarmiCARI2	96.0	Gauge	White	99.4%	167 of 168	25 min	2 h
623	De Witt Rain GaugeDEWI2	96.0	Gauge	De Witt	99.4%	167 of 168	25 min	2 h
623	Cahokia Creek 2 W Edwardsville 2 WEDWI2	96.0	Gauge	Madison	99.4%	167 of 168	25 min	2 h
623	Farmer City 2SWFMCI2	96.0	Gauge	De Witt	99.4%	167 of 168	25 min	2 h
623	GeneseoGENI2	96.0	Gauge	Henry	99.4%	167 of 168	25 min	2 h
623	Rock River AT Latham ParkLATI2	96.0	Gauge	Winnebago	99.4%	167 of 168	25 min	2 h
623	MolineMLII2	96.0	Gauge	Rock Island	99.4%	167 of 168	25 min	2 h
623	N Br Chicago River AT NilesNILI2	96.0	Gauge	Cook	99.4%	167 of 168	25 min	2 h
623	Edwards River AT New BostonNWBI2	96.0	Gauge	Mercer	99.4%	167 of 168	25 min	2 h
623	Illinois River AT OttawaOTWI2	96.0	Gauge	La Salle	99.4%	167 of 168	25 min	2 h
623	Salt Creek AT RowellRLLI2	96.0	Gauge	De Witt	99.4%	167 of 168	25 min	2 h
623	Rock River AT RocktonROKI2	96.0	Gauge	Winnebago	99.4%	167 of 168	25 min	2 h
623	RussellRUSI2	96.0	Gauge	Lake	99.4%	167 of 168	25 min	2 h
636	Springfield 6.3 SIL-SG-76	95.9	Volunteer	Sangamon	100%	3 of 3	9.4 h	25 h
637	Amboy 0.5 SSEIL-LE-27	95.9	Volunteer	Lee	100%	3 of 3	9.4 h	24 h
638	Carbondale 2.5 WIL-JK-13	95.9	Volunteer	Jackson	100%	3 of 3	9.4 h	24 h
639	Marshall 0.1 SIL-CL-5	95.9	Volunteer	Clark	100%	3 of 3	9.4 h	25 h
640	Belleville - Scott AFBBLV	95.9	Airport	St. Clair	99.4%	167 of 168	14 min	2 h
641	Big Muddy River AT Mount VernonBMMI2	95.9	Gauge	Jefferson	99.1%	333 of 336	25 min	1.5 h
641	Shoal Creek AT BreeseBRSI2	95.9	Gauge	Clinton	99.1%	333 of 336	25 min	1.5 h
641	Casey Fork River AT Mount VernonCFMI2	95.9	Gauge	Jefferson	99.1%	333 of 336	25 min	1.5 h
641	Kaskaskia Navigation-HwKNHI2	95.9	Gauge	Randolph	99.1%	333 of 336	25 min	1.5 h
641	Big Muddy River AT PlumfieldPLMI2	95.9	Gauge	Franklin	99.1%	333 of 336	25 min	1.5 h
641	Kaskaskia RREDI2	95.9	Gauge	Randolph	99.1%	333 of 336	25 min	1.5 h
641	Big Muddy River AT Rend LakeRNDI2	95.9	Gauge	Franklin	99.1%	333 of 336	25 min	1.5 h
641	L.Shelbyville PoolSBYI2	95.9	Gauge	Shelby	99.1%	333 of 336	25 min	1.5 h
641	Kaskaskia River AT VandaliaVNDI2	95.9	Gauge	Fayette	99.1%	333 of 336	25 min	1.5 h
641	Big Muddy River AT WaltonvilleWRCI2	95.9	Gauge	Jefferson	99.1%	333 of 336	25 min	1.5 h
651	Mississippi River AT New Boston LD17NBOI2	95.9	Gauge	Mercer	98.8%	332 of 336	24 min	1.5 h
652	Deerfield - NB Chicago RiverDRWI2	95.9	Gauge	Lake	98.5%	662 of 672	19 min	60 min
653	Kaskaskia River AT Carlyle TWCRLI2	95.8	Gauge	Clinton	98.8%	332 of 336	25 min	1.5 h
653	Hickory Creek AT Bluff CityHCKI2	95.8	Gauge	Fayette	98.8%	332 of 336	25 min	1.5 h
653	Carlyle - Kaskaskia RiverKCAI2	95.8	Gauge	Clinton	98.8%	332 of 336	25 min	1.5 h
653	Kaskaskia River AT Kaskaskia L&DKNLI2	95.8	Gauge	Randolph	98.8%	332 of 336	25 min	1.5 h
657	Fox River AT Algonquin TailwaterAFBI2	95.8	Gauge	Mchenry	98.8%	166 of 168	25 min	2 h
657	MontgomeryBBMI2	95.8	Gauge	Kane	98.8%	166 of 168	25 min	2 h
657	Lake Fork 1 NE CornlandCLFI2	95.8	Gauge	Logan	98.8%	166 of 168	25 min	2 h
657	De KalbDEKI2	95.8	Gauge	De Kalb	98.8%	166 of 168	25 min	2 h
657	Port Louisa - Mississippi PoolKEII2	95.8	Gauge	Mercer	98.8%	166 of 168	25 min	2 h
657	Macoupin Creek AT KaneMCPI2	95.8	Gauge	Greene	98.8%	166 of 168	25 min	2 h
657	Oak ForestOAKI2	95.8	Gauge	Cook	98.8%	166 of 168	25 min	2 h
657	Henderson Creek 7 NE OquawkaOQUI2	95.8	Gauge	Henderson	98.8%	166 of 168	25 min	2 h
657	Pope Creek AT KeithsburgPCKI2	95.8	Gauge	Mercer	98.8%	166 of 168	25 min	2 h
657	Kishwaukee River AT PerryvillePRYI2	95.8	Gauge	Winnebago	98.8%	166 of 168	25 min	2 h
657	Sugar Creek AT SpringfieldSUGI2	95.8	Gauge	Sangamon	98.8%	166 of 168	25 min	2 h
657	Dupage County Rain At Wheaton (Water Department)WHWI2	95.8	Gauge	DuPage	98.8%	166 of 168	25 min	2 h
669	Farm Creek AT FarmdaleFMDI2	95.8	Gauge	Tazewell	98.8%	166 of 168	25 min	2 h
669	Cache River At FormanFMNI2	95.8	Gauge	Johnson	98.8%	166 of 168	25 min	2 h
669	Iroquois River AT IroquoisIRQI2	95.8	Gauge	Iroquois	98.8%	166 of 168	25 min	2 h
669	Des Plaines River AT LemontLEMI2	95.8	Gauge	Will	98.8%	166 of 168	25 min	2 h
669	Lemont - Long RunLLCI2	95.8	Gauge	Cook	98.8%	166 of 168	25 min	2 h
669	Sugar Creek AT MilfordMILI2	95.8	Gauge	Iroquois	98.8%	166 of 168	25 min	2 h
669	Fox River AT MontgomeryMNGI2	95.8	Gauge	Kane	98.8%	166 of 168	25 min	2 h
669	Des Plaines River AT River ForestRVFI2	95.8	Gauge	Cook	98.8%	166 of 168	25 min	2 h
669	Skillet Fork River AT Wayne CityWYNI2	95.8	Gauge	Wayne	98.8%	166 of 168	25 min	2 h
678	Champaign - Boneyard CreekBYDI2	95.8	Gauge	Champaign	98.8%	166 of 168	25 min	2 h
678	Channahon - Des Plaines RiverDRCI2	95.8	Gauge	Will	98.8%	166 of 168	25 min	2 h
678	Channahon - Kankakee RiverKRDI2	95.8	Gauge	Grundy	98.8%	166 of 168	25 min	2 h
678	Northbrook - WF N BR ChicagoNBRI2	95.8	Gauge	Cook	98.8%	166 of 168	25 min	2 h
682	Chicago River at DeerfieldDRFI2	95.8	Gauge	Lake	98.3%	661 of 672	19 min	60 min
683	Illinois River AT MarseillesMMOI2	95.7	Gauge	La Salle	98.8%	166 of 168	25 min	2 h
684	Kaskaskia River AT ShelbyvilleSLVI2	95.7	Gauge	Shelby	98.5%	331 of 336	25 min	1.5 h
684	Whitley Creek AT AllenvilleWHCI2	95.7	Gauge	Moultrie	98.5%	331 of 336	25 min	1.5 h
686	Saline Branch AT UrbanaSBUI2	95.6	Gauge	Champaign	98.2%	165 of 168	25 min	2 h
687	Eagarville 0.2 SIL-MP-22	95.4	Volunteer	Macoupin	100%	3 of 3	10.4 h	24 h
688	New Millford 3.3 WIL-WN-10	95.4	Volunteer	Winnebago	100%	3 of 3	10.4 h	24 h
689	Herrin 0.8 NNEIL-WM-29	95.4	Volunteer	Williamson	100%	3 of 3	10.4 h	24 h
690	Collison 2.0 SEIL-VR-46	95.4	Volunteer	Vermilion	100%	3 of 3	10.4 h	24 h
691	S. Fork Sangamon River AT RochesterRCSI2	95.4	Gauge	Sangamon	97.6%	164 of 168	25 min	3 h
692	ChebanseCHBI2	95.3	Gauge	Kankakee	100%	168 of 168	29 min	77 min
692	FairdaleFDLI2	95.3	Gauge	De Kalb	100%	168 of 168	29 min	77 min
692	JoslinJOSI2	95.3	Gauge	Rock Island	100%	168 of 168	29 min	77 min
692	Big Bureau Creek AT PrincetonPINI2	95.3	Gauge	Bureau	100%	168 of 168	29 min	77 min
692	Vermilion River AT PontiacPNTI2	95.3	Gauge	Livingston	100%	168 of 168	29 min	77 min
692	La Moine River AT RipleyRIPI2	95.3	Gauge	Schuyler	100%	168 of 168	29 min	77 min
692	S. Fork Sangamon River AT RochesterROCI2	95.3	Gauge	Sangamon	100%	168 of 168	29 min	77 min
692	Des Plaines River AT RiversideRVRI2	95.3	Gauge	Cook	100%	168 of 168	29 min	77 min
692	Sangamon River AT RivertonRVTI2	95.3	Gauge	Sangamon	100%	168 of 168	29 min	77 min
692	Little Calumet River AT South HollandSHLI2	95.3	Gauge	Cook	100%	168 of 168	29 min	77 min
692	Salt Fork 3 NNE St. JosephSTJI2	95.3	Gauge	Champaign	100%	168 of 168	29 min	77 min
692	Wonder Lake - Nippersink CreekWNNI2	95.3	Gauge	McHenry	100%	168 of 168	29 min	77 min
704	Chicago - Schaumburg06C	95.3	Airport	Cook	97.4%	491 of 504	14 min	2.7 h
704	De KalbDKB	95.3	Airport	De Kalb	97.4%	491 of 504	14 min	2.7 h
706	Palatine - Harper CollegePHCI2	95.3	Gauge	Cook	94.5%	173 of 183	19 min	2 h
707	Mascoutah - Silver CreekMTHI2	95.2	Gauge	St. Clair	100%	168 of 168	30 min	77 min
708	Wabash River AT Mount CarmelMCRI2	95.2	Gauge	Wabash	100%	168 of 168	30 min	77 min
709	Markham - Calumet UnionMKHI2	95.2	Gauge	Cook	98.8%	664 of 672	20 min	75 min
710	SavannaSFY	95.2	Airport	Carroll	97.4%	491 of 504	14 min	2.7 h
711	Mississippi River 3 WNW Ill. City LD16ILNI2	95.1	Gauge	Rock Island	99.4%	334 of 336	25 min	1.5 h
712	Midlothian - Natalie CreekMDNI2	95.1	Gauge	Cook	99.4%	167 of 168	29 min	2 h
713	Calumet Harbor IL - 9087044CMTI2	95.1	Gauge	Cook	98.2%	825 of 840	23 min	48 min
714	Elmhurst QuarryEMQI2	95.1	Gauge	DuPage	98.2%	165 of 168	20 min	2 h
715	Litchfield3LF	95.1	Airport	Montgomery	97.8%	493 of 504	14 min	2.7 h
716	Clinton LakeCLLI2	95.1	Gauge	De Witt	97.0%	163 of 168	25 min	2 h
717	Urbana 2.4 SSEIL-CP-132	95.0	Volunteer	Champaign	100%	3 of 3	11.4 h	24 h
718	Freeburg 0.8 WNWIL-SC-39	95.0	Volunteer	St. Clair	100%	3 of 3	11.4 h	2 days
719	Mississippi River AT Fulton LD13FLTI2	95.0	Gauge	Whiteside	99.4%	334 of 336	25 min	1.5 h
720	Apple River AT HanoverAPRI2	95.0	Gauge	Jo Daviess	99.4%	167 of 168	30 min	2 h
720	Copper Slough AT ChampaignCMII2	95.0	Gauge	Champaign	99.4%	167 of 168	30 min	2 h
722	Mokena - Marley CreekMRYI2	94.9	Gauge	Will	98.8%	166 of 168	29 min	2 h
723	Carol Stream - WWTFCSTI2	94.9	Gauge	DuPage	93.4%	171 of 183	19 min	2 h
724	Mississippi River AT Quincy LD21QLDI2	94.8	Gauge	Adams	99.4%	334 of 336	25 min	1.5 h
725	Little Wabash River 3 AT CarmiCRII2	94.8	Gauge	White	98.8%	166 of 168	30 min	2 h
725	Rock River AT DixonDXRI2	94.8	Gauge	Lee	98.8%	166 of 168	30 min	2 h
725	Mount Prospect - McDonald CreekMCDI2	94.8	Gauge	Cook	98.8%	166 of 168	30 min	2 h
725	Seneca - Illinois RiverSNAI2	94.8	Gauge	La Salle	98.8%	166 of 168	30 min	2 h
725	Du Page River AT ShorewoodSORI2	94.8	Gauge	Will	98.8%	166 of 168	30 min	2 h
725	Fox River AT YorkvilleYKVI2	94.8	Gauge	Kendall	98.8%	166 of 168	30 min	2 h
731	Vermilion River AT DanvilleDNVI2	94.8	Gauge	Vermilion	97.6%	82 of 84	50 min	3.5 h
732	ComoCMOI2	94.8	Gauge	Whiteside	97.4%	655 of 672	19 min	75 min
732	Worth - Stony Creek (West)STCI2	94.8	Gauge	Cook	97.4%	655 of 672	19 min	75 min
734	FreeportFEP	94.8	Airport	Stephenson	97.2%	490 of 504	14 min	2.7 h
735	West Chicago - Permi LabFMII2	94.8	Gauge	DuPage	92.9%	170 of 183	19 min	2 h
736	JolietJOT	94.7	Airport	Will	97.8%	493 of 504	14 min	2.7 h
737	Mount SterlingI63	94.7	Airport	Brown	97.6%	492 of 504	14 min	2.7 h
737	RantoulTIP	94.7	Airport	Champaign	97.6%	492 of 504	14 min	2.7 h
739	Mount VernonMVN	94.6	Airport	Jefferson	100%	168 of 168	12 min	68 min
740	Crab Orchard Fire WeatherCOWI2	94.6	Gauge	Williamson	100%	168 of 168	19 min	67 min
741	Des Plaines River AT LincolnshireLDRI2	94.6	Gauge	Lake	98.2%	165 of 168	30 min	2 h
742	FloraFOA	94.6	Airport	Clay	97.6%	492 of 504	14 min	2.7 h
743	Edwardsville 1.1 ENEIL-MD-40	94.5	Volunteer	Madison	100%	3 of 3	12.4 h	24 h
744	JacksonvilleIJX	94.4	Airport	Morgan	97.6%	492 of 504	14 min	2.7 h
745	Effingham1H2	94.3	Airport	Effingham	97.6%	492 of 504	14 min	2.7 h
746	PittsfieldPPQ	94.3	Airport	Pike	97.0%	489 of 504	14 min	2.7 h
747	FairfieldFWC	94.3	Airport	Wayne	96.6%	487 of 504	13 min	2.7 h
748	Middle Fork Vermilion River 2 AT OakwoodOKWI2	94.2	Gauge	Vermilion	94.0%	158 of 168	20 min	4 h
749	LaconC75	94.1	Airport	Marshall	97.6%	492 of 504	14 min	2.7 h
750	CairoCIR	94.1	Airport	Mississippi	97.4%	491 of 504	14 min	2.7 h

How a station is ranked

The 247 Rank answers one question about a weather station: can its readings be relied on? A station has to deliver: its reports arrive when due, soon, without long silences. And its readings have to be right: close to a trusted station nearby, passing their checks, and in step with the weather the forecast and its neighbours confirm.

The 247 score

Storm Station's poller asks every network on its own schedule, around the clock, and keeps the time of every report it hears; the reference comparison and the forecast engine keep the rest. From the last seven days of that record each station is scored out of 100 on six parts, and its 247 score is their weighted mean:

Reports receivedweight 35The share of its scheduled reports received. A station that sends every 5 minutes is due 2,016 reports in a week; one that reports once a day is due 7. Each report is counted in a slot centred on the station's own report time, so a report a minute early or late is still on time, and the week ends an hour back, so a report still on its way is never counted missed.Full marks: 100% received. No marks: none received.
Arrivalweight 10The median time its reports took to arrive from the moment a reading was taken to the moment it reached Storm Station.Full marks: within 10 minutes, or a tenth of its schedule for a station that reports less often. No marks: an hour, or its whole schedule.
Continuityweight 10Its longest silence against its own schedule, so a daily gauge is not marked down for a day between reports.Full marks: a silence of 3 reports or less. No marks: 72 reports, falling evenly on a log scale between.
Accuracyweight 20How closely its temperature follows its reference station the nearest airport or climate reference station that reported within half an hour, up to 15 miles away, reading by reading. A steady offset is taken out, and where both heights are known only the offset beyond 3 F that the height difference does not explain is counted.Full marks: within 1.5 F, allowing 0.1 F more for each mile to the reference. No marks: 6.5 F beyond that.
Instrument checksweight 15The share of its readings that pass a check. For an airfield, the check the forecast engine runs the next day: each reading against the stations around it, as weather services check their own. For any other station, a reading 20 F or more from its reference fails, unless the two stand 3,000 ft or more apart.Full marks: none failed. No marks: 5% failed.
Forecast checkweight 10How closely its temperature matched Storm Station's forecast for the same hours, checked the next day, for every airfield the forecast engine scores. A station whose readings stray far from a forecast its neighbours confirm is one to doubt.Full marks: within 2 F on average. No marks: 8 F.

A part is scored once the week holds 24 readings or comparisons for it. A part that cannot be measured where a station stands counts at the middle of its state's measured stations, so the station is neither lifted nor sunk by it. A part measured nowhere in the state is left out, and the others carry its weight.

From score to rank

Each state's stations are ranked by their score, to the tenth. At an equal score the longer record comes first: a station that sent 2,016 of 2,016 reports has shown more than one that sent 7 of 7. Then the faster arrival, then the shorter silence. Ties on all of them share a rank, as a race is scored: three stations tied for third are all third, and the next is sixth.

A station is ranked once its week holds enough reports to measure: 12, or 3 days for a gauge that reports once a day. The rank is made again every day, so a station that falls silent or starts to read wrong drops, and one that recovers climbs back. Every page shows the same ranking: a station's rank here, in its state's list and on its own page come from one run, and a new run reaches them together. Each station's page shows its score part by part, with the figures behind each.

The same figures as data

/api/ranks for a state and /api/rank for one station, its score in parts; the developer page has every field.