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 1 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 ranked station, first to last

1stLast

Each rank wears its colour: first in its state in bright green, last in deep red, and every rank between mixed along the band.

How they reported this week

The days behind it

7 days30 days 90 days

every report90 to 99%under 90%

Every station, ranked

Rank	Station	Score	Network	County	Received	Reports	Arrives in	Longest silence
1	PalwaukeePWK	100.0	Airport	Cook	100%	168 of 168	7 min	60 min
2	LawrencevilleLWV	99.8	Airport	Knox	99.4%	167 of 168	6 min	2 h
3	RockfordRFD	99.7	Airport	Winnebago	100%	168 of 168	5 min	60 min
4	Chicago/DupageDPA	99.6	Airport	DuPage	98.8%	166 of 168	7 min	2 h
5	Chicago OHareORD	99.6	Airport	DuPage	98.8%	166 of 168	8 min	2 h
6	ChicagoMDW	99.4	Airport	Cook	99.4%	167 of 168	6 min	2 h
7	PeoriaPIA	99.3	Airport	Peoria	99.4%	167 of 168	5 min	2 h
8	Mattoon/CharlestMTO	99.3	Airport	Coles	98.8%	166 of 168	6 min	2 h
9	Chicago/AuroraARR	99.2	Airport	Kane	100%	168 of 168	7 min	63 min
10	Bloomington/NormBMI	99.2	Airport	Mclean	100%	168 of 168	12 min	70 min
11	Ohio River AT CairoCIRI2	99.1	Gauge	Alexander	100%	168 of 168	5 min	62 min
11	MetropolisMTRI2	99.1	Gauge	Massac	100%	168 of 168	5 min	62 min
11	Olmsted Lock And DamOLMI2	99.1	Gauge	Pulaski	100%	168 of 168	5 min	62 min
14	Wb Dupage River At Naperville (Fawell Dam)NFDI2	99.1	Gauge	DuPage	100%	168 of 168	10 min	65 min
14	Dupage County Rain At Wood Dale (Itasca Reservoir)WDLI2	99.1	Gauge	DuPage	100%	168 of 168	10 min	65 min
16	Central Illinois IlILX	99.1	Cooperative	Logan	100%	28 of 28	3 min	6.7 h
17	Romeoville WFOLOTI2	99.1	Cooperative	Will	100%	28 of 28	13 min	6.1 h
18	Chicago OHareORD	99.1	Gauge	Cook	100%	28 of 28	15 min	6.1 h
18	RockfordRFD	99.1	Gauge	Winnebago	100%	28 of 28	15 min	6.1 h
20	AT Lake SpringfieldSPNI2	99.1	Cooperative	Sangamon	100%	7 of 7	3 min	25 h
21	Gladstone L/D 18GLDI2	99.1	Cooperative	Henderson	100%	7 of 7	3 min	24.4 h
22	Barrington 3SWBARI2	99.1	Cooperative	Cook	100%	7 of 7	3 min	25 h
23	CharlestonCRSI2	99.1	Cooperative	Coles	100%	7 of 7	3 min	24 h
24	AvonAVOI2	99.1	Cooperative	Fulton	100%	7 of 7	13 min	24 h
24	Elgin WaterELGI2	99.1	Cooperative	Kane	100%	7 of 7	13 min	24 h
26	ElizabethEZBI2	99.1	Cooperative	Jo Daviess	100%	7 of 7	13 min	24 h
27	OgdenOGDI2	99.1	Cooperative	Champaign	100%	7 of 7	13 min	24 h
28	Milstadt 2SWMSTI2	99.1	Cooperative	St. Clair	100%	7 of 7	13 min	24.8 h
29	CaseyCASI2	99.1	Cooperative	Clark	100%	7 of 7	13 min	24 h
29	Joliet 2SW - Brandon RoadJETI2	99.1	Cooperative	Will	100%	7 of 7	13 min	24 h
29	Paris Water WorksPWWI2	99.1	Cooperative	Edgar	100%	7 of 7	13 min	24 h
29	ShermanSHRI2	99.1	Cooperative	Sangamon	100%	7 of 7	13 min	24 h
33	Marseilles Lock/DamMALI2	99.1	Cooperative	La Salle	100%	7 of 7	13 min	24.8 h
34	Coal City 4NNW (Hydro)CTYI2	99.1	Cooperative	Grundy	100%	7 of 7	13 min	24 h
35	Grand Chain Dam 53GCTI2	99.1	Cooperative	Pulaski	100%	7 of 7	13 min	25 h
36	GeneseoGINI2	99.1	Cooperative	Henry	100%	7 of 7	14 min	24 h
37	Ellis GroveKNLI2	99.1	Cooperative	Randolph	100%	7 of 7	22 min	24 h
37	RantoulRANI2	99.1	Cooperative	Champaign	100%	7 of 7	22 min	24 h
39	AledoALEI2	99.1	Cooperative	Mercer	100%	7 of 7	22 min	26 h
40	Moweaqua 2SMQUI2	99.1	Cooperative	Shelby	100%	7 of 7	23 min	24 h
41	Embarras River AT NewtonNTNI2	99.1	Cooperative	Jasper	100%	7 of 7	23 min	24 h
42	Aurora WaterARRI2	99.1	Cooperative	Kane	100%	7 of 7	23 min	24 h
43	Steward 3SSTWI2	99.1	Cooperative	Lee	100%	7 of 7	23 min	24 h
44	PanaPNAI2	99.1	Cooperative	Shelby	100%	7 of 7	23 min	25 h
45	FreeportFEEI2	99.1	Cooperative	Stephenson	100%	7 of 7	23 min	24 h
46	De KalbDKAI2	99.1	Cooperative	De Kalb	100%	7 of 7	33 min	24 h
47	Park Forest WaterPKFI2	99.1	Cooperative	Cook	100%	7 of 7	33 min	24 h
48	Yates CityYATI2	99.1	Cooperative	Knox	100%	7 of 7	33 min	24.3 h
49	SidellSIDI2	99.1	Cooperative	Vermilion	100%	7 of 7	33 min	26 h
50	La HarpeLAHI2	99.1	Cooperative	Hancock	100%	7 of 7	33 min	24 h
50	Ottawa 4SWOTTI2	99.1	Cooperative	La Salle	100%	7 of 7	33 min	24 h
50	QuincyQLDI2	99.1	Cooperative	Adams	100%	7 of 7	33 min	24 h
53	HighlandHGHI2	99.1	Cooperative	Madison	100%	7 of 7	33 min	24 h
54	Anna 2 NNEANNI2	99.1	Cooperative	Union	100%	7 of 7	33 min	24 h
54	McHenry Stratton Lock/DamMCHI2	99.1	Cooperative	McHenry	100%	7 of 7	33 min	24 h
56	THRI2THRI2	99.1	DCP	-	100%	7 of 7	35 min	24 h
57	KewaneeKEWI2	99.1	Cooperative	Henry	100%	7 of 7	42 min	24 h
58	NormalNRLI2	99.1	Cooperative	Mclean	100%	7 of 7	43 min	24 h
59	Canton 1 ESECANI2	99.1	Cooperative	Fulton	100%	7 of 7	43 min	24 h
59	Shawneetown 3WSWSWNI2	99.1	Cooperative	Gallatin	100%	7 of 7	43 min	24 h
59	TuscolaTUSI2	99.1	Cooperative	Douglas	100%	7 of 7	43 min	24 h
62	MattoonMOOI2	99.1	Cooperative	Coles	100%	7 of 7	43 min	25 h
63	MorrisonvilleMRVI2	99.1	Cooperative	Christian	100%	7 of 7	52 min	30 h
64	LovingtonLOVI2	99.1	Cooperative	Moultrie	100%	7 of 7	53 min	25 h
65	BentleyBTYI2	99.1	Cooperative	Hancock	100%	7 of 7	53 min	26 h
66	Bourbonnais 3NWBOUI2	99.1	Cooperative	Kankakee	100%	7 of 7	53 min	24 h
66	HutsonvilleHTVI2	99.1	Cooperative	Crawford	100%	7 of 7	53 min	24 h
68	KnoxvilleKNXI2	99.1	Cooperative	Knox	100%	7 of 7	62 min	24 h
69	WindsorWISI2	99.1	Cooperative	Shelby	100%	7 of 7	63 min	24 h
70	MortonMRTI2	99.1	Cooperative	Tazewell	100%	7 of 7	73 min	24 h
71	Rock Island L/D 15RCKI2	99.1	Cooperative	Rock Island	100%	7 of 7	1.6 h	24 h
72	HennepinHNPI2	99.1	Cooperative	Putnam	100%	7 of 7	1.7 h	24 h
73	Mount PulaskiMTPI2	99.1	Cooperative	Logan	100%	7 of 7	1.7 h	24 h
74	ShelbyvilleSBYI2	99.1	Cooperative	Shelby	100%	7 of 7	1.7 h	24 h
75	Chicago Northerly IslandCNII2	99.1	Cooperative	Cook	100%	7 of 7	1.7 h	24 h
76	Manhattan 5NEMATI2	99.1	Cooperative	Will	100%	7 of 7	1.9 h	24 h
77	Batavia (Hydro)BATI2	99.1	Cooperative	Kane	100%	7 of 7	2 h	24 h
78	Stockton 3NNESTOI2	99.1	Cooperative	Jo Daviess	100%	7 of 7	2 h	24 h
79	White HallWHLI2	99.1	Cooperative	Greene	100%	7 of 7	2.4 h	24 h
80	Chicago Midway AP 3SWMDWI2	99.1	Cooperative	Cook	100%	7 of 7	2.6 h	24 h
81	Champaign 0.6 NNEIL-CP-111	99.1	Volunteer	Champaign	100%	3 of 3	26 min	24 h
81	St. Joseph 1.1 ENEIL-CP-137	99.1	Volunteer	Champaign	100%	3 of 3	26 min	24 h
81	Watseka 6.9 WNWIL-IR-14	99.1	Volunteer	Iroquois	100%	3 of 3	26 min	24 h
81	Decatur 3.2 SWIL-MA-27	99.1	Volunteer	Macon	100%	3 of 3	26 min	24 h
81	Metropolis 7.1 NIL-MC-6	99.1	Volunteer	Massac	100%	3 of 3	26 min	24 h
81	Bloomington 3.9 ESEIL-MCL-56	99.1	Volunteer	McLean	100%	3 of 3	26 min	24 h
81	Mokena 2.1 SWIL-WL-178	99.1	Volunteer	Will	100%	3 of 3	26 min	24 h
88	Hardin 3.9 SIL-CH-2	99.1	Volunteer	Calhoun	100%	3 of 3	26 min	25 h
88	Danville 4.2 NWIL-VR-33	99.1	Volunteer	Vermilion	100%	3 of 3	26 min	25 h
90	Franklin Park 0.5 SSEIL-CK-345	99.1	Volunteer	Cook	100%	3 of 3	26 min	24 h
90	Champaign 2.3 SSEIL-CP-165	99.1	Volunteer	Champaign	100%	3 of 3	26 min	24 h
90	West Salem 0.2 EIL-EW-5	99.1	Volunteer	Edwards	100%	3 of 3	26 min	24 h
90	Minooka 0.3 NEIL-GY-10	99.1	Volunteer	Grundy	100%	3 of 3	26 min	24 h
90	Colona 1.3 WNWIL-HY-27	99.1	Volunteer	Henry	100%	3 of 3	26 min	24 h
90	Aurora 3.5 ESEIL-KN-115	99.1	Volunteer	DuPage	100%	3 of 3	26 min	24 h
90	Washington 2.3 WIL-TZ-49	99.1	Volunteer	Tazewell	100%	3 of 3	26 min	24 h
90	Cobden 0.1 WNWIL-UN-13	99.1	Volunteer	Union	100%	3 of 3	26 min	24 h
90	Bult Field-Monee 4.9 SEIL-WL-149	99.1	Volunteer	Will	100%	3 of 3	26 min	24 h
99	Mahomet 0.5 NNWIL-CP-163	99.1	Volunteer	Champaign	100%	3 of 3	26 min	25 h
100	Camp Point 1.3 WNWIL-AD-24	99.1	Volunteer	Adams	100%	3 of 3	26 min	24 h
100	Capron 0.1 NIL-BN-14	99.1	Volunteer	Boone	100%	3 of 3	26 min	24 h
100	Hoffman Estates 1.6 SEIL-CK-278	99.1	Volunteer	Cook	100%	3 of 3	26 min	24 h
100	Harwood Heights 0.4 NNEIL-CK-285	99.1	Volunteer	Cook	100%	3 of 3	26 min	24 h
100	Morton Grove 1.2 WNWIL-CK-326	99.1	Volunteer	Cook	100%	3 of 3	26 min	24 h
100	Palatine 1.2 NWIL-CK-346	99.1	Volunteer	Cook	100%	3 of 3	26 min	24 h
100	Lincolnwood 1.8 EIL-CK-94	99.1	Volunteer	Cook	100%	3 of 3	26 min	24 h
100	La Grange Park 0.7 SSWIL-CK-98	99.1	Volunteer	Cook	100%	3 of 3	26 min	24 h
100	Urbana 2.2 SEIL-CP-135	99.1	Volunteer	Champaign	100%	3 of 3	26 min	24 h
100	Rantoul 1.2 NEIL-CP-159	99.1	Volunteer	Champaign	100%	3 of 3	26 min	24 h
100	Aurora 3.6 SEIL-DP-16	99.1	Volunteer	DuPage	100%	3 of 3	26 min	24 h
100	Bryant 0.1 ENEIL-FL-7	99.1	Volunteer	Fulton	100%	3 of 3	26 min	24 h
100	Carbon Hill 3.1 NIL-GY-1	99.1	Volunteer	Grundy	100%	3 of 3	26 min	24 h
100	Colona 0.5 ESEIL-HY-30	99.1	Volunteer	Henry	100%	3 of 3	26 min	24 h
100	Hanover 0.2 NWIL-JD-6	99.1	Volunteer	Jo Daviess	100%	3 of 3	26 min	24 h
100	Yorkville 4.5 NIL-KD-157	99.1	Volunteer	Kendall	100%	3 of 3	26 min	24 h
100	Oswego 3.8 WSWIL-KD-177	99.1	Volunteer	Kendall	100%	3 of 3	26 min	24 h
100	Geneva 1.3 NWIL-KN-121	99.1	Volunteer	Kane	100%	3 of 3	26 min	24 h
100	Hampshire 0.5 SEIL-KN-145	99.1	Volunteer	Kane	100%	3 of 3	26 min	24 h
100	Sugar Grove 0.7 NEIL-KN-4	99.1	Volunteer	Kane	100%	3 of 3	26 min	24 h
100	St. Charles 6.0 NWIL-KN-67	99.1	Volunteer	Kane	100%	3 of 3	26 min	24 h
100	Elgin 2.5 WIL-KN-95	99.1	Volunteer	Kane	100%	3 of 3	26 min	24 h
100	Ashton 0.4 SSWIL-LE-8	99.1	Volunteer	Lee	100%	3 of 3	26 min	24 h
100	Hartsburg 3.2 EIL-LG-50	99.1	Volunteer	Logan	100%	3 of 3	26 min	24 h
100	Sumner 1.0 SWIL-LW-6	99.1	Volunteer	Lawrence	100%	3 of 3	26 min	24 h
100	Illiopolis 4.4 NNEIL-MA-34	99.1	Volunteer	Macon	100%	3 of 3	26 min	24 h
100	Harvard 4.4 NNEIL-MCH-103	99.1	Volunteer	McHenry	100%	3 of 3	26 min	24 h
100	Lake In The Hills 0.4 SSEIL-MCH-117	99.1	Volunteer	McHenry	100%	3 of 3	26 min	24 h
100	Bull Valley 2.5 WNWIL-MCH-13	99.1	Volunteer	McHenry	100%	3 of 3	26 min	24 h
100	Normal 1.4 WNWIL-MCL-66	99.1	Volunteer	McLean	100%	3 of 3	26 min	24 h
100	Bloomington 2.1 SWIL-MCL-85	99.1	Volunteer	McLean	100%	3 of 3	26 min	24 h
100	Hudson 0.8 SIL-MCL-86	99.1	Volunteer	McLean	100%	3 of 3	26 min	24 h
100	Jacksonville 1.3 NWIL-MG-19	99.1	Volunteer	Morgan	100%	3 of 3	26 min	24 h
100	Peoria 3.4 WNWIL-PR-8	99.1	Volunteer	Peoria	100%	3 of 3	26 min	24 h
100	Monticello 0.6 ENEIL-PT-20	99.1	Volunteer	Piatt	100%	3 of 3	26 min	24 h
100	Riverton 1.9 WIL-SG-4	99.1	Volunteer	Sangamon	100%	3 of 3	26 min	24 h
100	Springfield 5.1 NIL-SG-79	99.1	Volunteer	Sangamon	100%	3 of 3	26 min	24 h
100	Pana 4.7 SSEIL-SH-6	99.1	Volunteer	Shelby	100%	3 of 3	26 min	24 h
100	Bradford 0.3 WSWIL-SK-10	99.1	Volunteer	Stark	100%	3 of 3	26 min	24 h
100	Rushville 4.1 NEIL-SY-6	99.1	Volunteer	Schuyler	100%	3 of 3	26 min	24 h
100	Tremont 7.2 SWIL-TZ-52	99.1	Volunteer	Tazewell	100%	3 of 3	26 min	24 h
100	Cobden 4.1 ENEIL-UN-8	99.1	Volunteer	Union	100%	3 of 3	26 min	24 h
100	Prophetstown 0.2 SWIL-WD-18	99.1	Volunteer	Whiteside	100%	3 of 3	26 min	24 h
100	Homer Glen 0.8 ENEIL-WL-16	99.1	Volunteer	Will	100%	3 of 3	26 min	24 h
100	Braidwood 1.5 NEIL-WL-191	99.1	Volunteer	Will	100%	3 of 3	26 min	24 h
100	New Lenox 1.8 SEIL-WL-63	99.1	Volunteer	Will	100%	3 of 3	26 min	24 h
100	Rockford 4.5 WSWIL-WN-40	99.1	Volunteer	Winnebago	100%	3 of 3	26 min	24 h
100	Addieville 5.7 SWIL-WS-2	99.1	Volunteer	Washington	100%	3 of 3	26 min	24 h
148	Streator 5.0 NWIL-LS-78	99.1	Volunteer	La Salle	100%	3 of 3	26 min	25 h
149	Winnetka 1.0 NWIL-CK-473	99.1	Volunteer	Cook	100%	3 of 3	26 min	26 h
150	Evanston 1.2 SIL-CK-371	99.1	Volunteer	Cook	100%	3 of 3	26 min	24 h
150	Alsip 0.9 EIL-CK-390	99.1	Volunteer	Cook	100%	3 of 3	26 min	24 h
150	Wheaton 2.0 NNEIL-DP-132	99.1	Volunteer	DuPage	100%	3 of 3	26 min	24 h
150	Farmer City 2.6 WSWIL-DW-8	99.1	Volunteer	De Witt	100%	3 of 3	26 min	24 h
150	Mazon 2.4 SEIL-GY-37	99.1	Volunteer	Grundy	100%	3 of 3	26 min	24 h
150	Simpson 1.8 NWIL-JH-5	99.1	Volunteer	Johnson	100%	3 of 3	26 min	24 h
150	Yorkville 0.9 SSWIL-KD-110	99.1	Volunteer	Kendall	100%	3 of 3	26 min	24 h
150	Galesburg 5.7 EIL-KX-26	99.1	Volunteer	Knox	100%	3 of 3	26 min	24 h
150	Grand Ridge 0.2 SSWIL-LS-76	99.1	Volunteer	La Salle	100%	3 of 3	26 min	24 h
150	Edwardsville 1.2 ENEIL-MD-45	99.1	Volunteer	Madison	100%	3 of 3	26 min	24 h
150	Jacksonville 2.6 SEIL-MG-14	99.1	Volunteer	Morgan	100%	3 of 3	26 min	24 h
150	Shelbyville 0.5 NEIL-SH-1	99.1	Volunteer	Shelby	100%	3 of 3	26 min	24 h
150	Freeport 4.3 WIL-SP-28	99.1	Volunteer	Stephenson	100%	3 of 3	26 min	24 h
150	Cobden 0.8 SSEIL-UN-6	99.1	Volunteer	Union	100%	3 of 3	26 min	24 h
150	Georgetown 0.5 NNWIL-VR-35	99.1	Volunteer	Vermilion	100%	3 of 3	26 min	24 h
150	Frankfort 1.3 ESEIL-WL-165	99.1	Volunteer	Will	100%	3 of 3	26 min	24 h
150	Peotone 0.4 ENEIL-WL-46	99.1	Volunteer	Will	100%	3 of 3	26 min	24 h
167	Champaign 2.5 SIL-CP-62	99.1	Volunteer	Champaign	100%	3 of 3	26 min	25 h
167	Aurora 1.9 ESEIL-DP-211	99.1	Volunteer	DuPage	100%	3 of 3	26 min	25 h
167	Gurnee 1.6 WIL-LK-42	99.1	Volunteer	Lake	100%	3 of 3	26 min	25 h
167	Rockford 3.8 NNWIL-WN-48	99.1	Volunteer	Winnebago	100%	3 of 3	26 min	25 h
171	Arthur 0.8 NNWIL-MU-1	99.1	Volunteer	Moultrie	100%	3 of 3	26 min	26 h
172	Vienna 5.3 NNWIL-JH-4	99.1	Volunteer	Johnson	100%	3 of 3	26 min	2 days
173	Hoopeston 0.6 EIL-VR-25	99.1	Volunteer	Vermilion	100%	3 of 3	26 min	24 h
174	Sleepy Hollow 0.7 WIL-KN-118	99.1	Volunteer	Kane	100%	3 of 3	26 min	25 h
174	Carlock 2.1 NNEIL-MCL-80	99.1	Volunteer	McLean	100%	3 of 3	26 min	25 h
176	Hoffman Estates 4.2 WIL-CK-456	99.1	Volunteer	Cook	100%	3 of 3	85 min	24 h
176	Morrisonville 0.5 SSEIL-CN-13	99.1	Volunteer	Christian	100%	3 of 3	85 min	24 h
176	Champaign 2.2 SSEIL-CP-148	99.1	Volunteer	Champaign	100%	3 of 3	85 min	24 h
176	Urbana 0.5 WIL-CP-151	99.1	Volunteer	Champaign	100%	3 of 3	85 min	24 h
176	Mahomet 1.7 NNEIL-CP-59	99.1	Volunteer	Champaign	100%	3 of 3	85 min	24 h
176	Winfield 0.6 SSWIL-DP-176	99.1	Volunteer	DuPage	100%	3 of 3	85 min	24 h
176	Woodridge 0.3 SWIL-DP-198	99.1	Volunteer	DuPage	100%	3 of 3	85 min	24 h
176	Albion 0.2 SWIL-EW-3	99.1	Volunteer	Edwards	100%	3 of 3	85 min	24 h
176	Albion 1.4 EIL-EW-4	99.1	Volunteer	Edwards	100%	3 of 3	85 min	24 h
176	Gibson City 3.0 WNWIL-FD-9	99.1	Volunteer	Ford	100%	3 of 3	85 min	24 h
176	Christopher 1.1 NNWIL-FK-7	99.1	Volunteer	Franklin	100%	3 of 3	85 min	24 h
176	Knoxville 0.7 NWIL-KX-9	99.1	Volunteer	Knox	100%	3 of 3	85 min	24 h
176	Mundelein 1.6 WNWIL-LK-74	99.1	Volunteer	Lake	100%	3 of 3	85 min	24 h
176	Highland 1.4 ESEIL-MD-46	99.1	Volunteer	Madison	100%	3 of 3	85 min	24 h
176	Belleville 1.9 WNWIL-SC-37	99.1	Volunteer	St. Clair	100%	3 of 3	85 min	24 h
176	Springfield 2.2 SEIL-SG-66	99.1	Volunteer	Sangamon	100%	3 of 3	85 min	24 h
176	Cobden 0.7 EIL-UN-17	99.1	Volunteer	Union	100%	3 of 3	85 min	24 h
176	Plainfield 3.0 ESEIL-WL-58	99.1	Volunteer	Will	100%	3 of 3	85 min	24 h
194	Sidney 0.9 NIL-CP-37	99.1	Volunteer	Champaign	100%	3 of 3	85 min	25 h
194	Yorkville 1.2 ENEIL-KD-168	99.1	Volunteer	Kendall	100%	3 of 3	85 min	25 h
196	Thompsonville 3.5 ESEIL-SL-5	99.1	Volunteer	Saline	100%	3 of 3	85 min	2 days
197	Wheeling 1.0 NWIL-CK-460	99.1	Volunteer	Cook	100%	3 of 3	85 min	24 h
197	Illinois City 6.7 SWIL-RI-22	99.1	Volunteer	Rock Island	100%	3 of 3	85 min	24 h
199	Palatine 1.5 NEIL-CK-406	99.1	Volunteer	Cook	100%	3 of 3	86 min	24 h
199	Urbana 0.9 SIL-CP-175	99.1	Volunteer	Champaign	100%	3 of 3	86 min	24 h
199	Lombard 1.2 NIL-DP-173	99.1	Volunteer	DuPage	100%	3 of 3	86 min	24 h
199	Carbondale 0.7 WIL-JK-31	99.1	Volunteer	Jackson	100%	3 of 3	86 min	24 h
199	West Brooklyn 4.3 WNWIL-LE-26	99.1	Volunteer	Lee	100%	3 of 3	86 min	24 h
199	Lincoln 2.0 ENEIL-LG-49	99.1	Volunteer	Logan	100%	3 of 3	86 min	24 h
199	Beason 4.0 SWIL-LG-9	99.1	Volunteer	Logan	100%	3 of 3	86 min	24 h
199	Lake Forest 2.0 WSWIL-LK-128	99.1	Volunteer	Lake	100%	3 of 3	86 min	24 h
199	White Heath 3.7 NNEIL-PT-8	99.1	Volunteer	Piatt	100%	3 of 3	86 min	24 h
199	Pleasant Plains 1.7 WSWIL-SG-80	99.1	Volunteer	Sangamon	100%	3 of 3	86 min	24 h
209	Arlington Heights 3.9 NNWIL-CK-467	99.1	Volunteer	Cook	100%	3 of 3	86 min	25 h
209	Oak Park 1.3 NNEIL-CK-74	99.1	Volunteer	Cook	100%	3 of 3	86 min	25 h
209	Savoy 2.6 WSWIL-CP-50	99.1	Volunteer	Champaign	100%	3 of 3	86 min	25 h
209	Batavia 1.5 WNWIL-KN-23	99.1	Volunteer	Kane	100%	3 of 3	86 min	25 h
209	Carterville 3.6 NWIL-WM-31	99.1	Volunteer	Williamson	100%	3 of 3	86 min	25 h
214	Quincy 4.4 ESEIL-AD-16	99.1	Volunteer	Adams	100%	3 of 3	86 min	24 h
214	Mount Prospect 0.2 NNEIL-CK-367	99.1	Volunteer	Cook	100%	3 of 3	86 min	24 h
214	Rantoul 1.4 NNEIL-CP-149	99.1	Volunteer	Champaign	100%	3 of 3	86 min	24 h
214	Urbana 5.4 ENEIL-CP-177	99.1	Volunteer	Champaign	100%	3 of 3	86 min	24 h
214	St. Elmo 2.4 NNWIL-FY-2	99.1	Volunteer	Fayette	100%	3 of 3	86 min	24 h
214	Carbondale 6.2 SIL-JK-38	99.1	Volunteer	Jackson	100%	3 of 3	86 min	24 h
214	Geneva 0.9 EIL-KN-133	99.1	Volunteer	Kane	100%	3 of 3	86 min	24 h
214	Batavia 2.5 WIL-KN-161	99.1	Volunteer	Kane	100%	3 of 3	86 min	24 h
214	Gilson 5.7 ENEIL-KX-27	99.1	Volunteer	Knox	100%	3 of 3	86 min	24 h
214	Libertyville 1.6 SEIL-LK-127	99.1	Volunteer	Lake	100%	3 of 3	86 min	24 h
214	Cary 0.9 WIL-MCH-118	99.1	Volunteer	McHenry	100%	3 of 3	86 min	24 h
214	Edwardsville 5.5 EIL-MD-53	99.1	Volunteer	Madison	100%	3 of 3	86 min	24 h
214	Olney 1.5 NEIL-RC-6	99.1	Volunteer	Richland	100%	3 of 3	86 min	24 h
214	Dundas 1.4 EIL-RC-7	99.1	Volunteer	Richland	100%	3 of 3	86 min	24 h
214	Joliet 0.8 EIL-WL-174	99.1	Volunteer	Will	100%	3 of 3	86 min	24 h
229	Park Ridge 0.7 WNWIL-CK-192	99.1	Volunteer	Cook	100%	3 of 3	86 min	25 h
229	Earlville 4.8 NNEIL-DK-29	99.1	Volunteer	De Kalb	100%	3 of 3	86 min	25 h
229	Bloomingdale 1.2 ESEIL-DP-150	99.1	Volunteer	DuPage	100%	3 of 3	86 min	25 h
229	Geneseo 2.0 NWIL-HY-8	99.1	Volunteer	Henry	100%	3 of 3	86 min	25 h
229	Belle Rive 1.7 NNEIL-JF-9	99.1	Volunteer	Jefferson	100%	3 of 3	86 min	25 h
229	Oswego 0.3 EIL-KD-136	99.1	Volunteer	Kendall	100%	3 of 3	86 min	25 h
229	Chestnut 1.9 WIL-LG-15	99.1	Volunteer	Logan	100%	3 of 3	86 min	25 h
229	Ottawa 1.3 NWIL-LS-1	99.1	Volunteer	La Salle	100%	3 of 3	86 min	25 h
229	Lovington 4.1 NNWIL-MU-8	99.1	Volunteer	Moultrie	100%	3 of 3	86 min	25 h
229	Danville 0.6 NWIL-VR-14	99.1	Volunteer	Vermilion	100%	3 of 3	86 min	25 h
229	Plainfield 1.8 NWIL-WL-189	99.1	Volunteer	Will	100%	3 of 3	86 min	25 h
240	Morris 4.5 NWIL-GY-34	99.1	Volunteer	Grundy	100%	3 of 3	86 min	26 h
240	Amboy 0.5 SSWIL-LE-22	99.1	Volunteer	Lee	100%	3 of 3	86 min	26 h
240	Decatur 3.0 WIL-MA-41	99.1	Volunteer	Macon	100%	3 of 3	86 min	26 h
240	Troy 1.9 SIL-MD-41	99.1	Volunteer	Madison	100%	3 of 3	86 min	26 h
240	Villa Ridge 2.1 ESEIL-PL-4	99.1	Volunteer	Pulaski	100%	3 of 3	86 min	26 h
240	Metamora 6.4 WIL-WF-24	99.1	Volunteer	Woodford	100%	3 of 3	86 min	26 h
246	Belvidere 5.0 NNWIL-BN-19	99.1	Volunteer	Boone	100%	3 of 3	86 min	24 h
246	Walnut 5.3 ENEIL-BU-11	99.1	Volunteer	Bureau	100%	3 of 3	86 min	24 h
246	Bridgeview 1.3 NNWIL-CK-12	99.1	Volunteer	Cook	100%	3 of 3	86 min	24 h
246	Harwood Heights 1.8 ESEIL-CK-470	99.1	Volunteer	Cook	100%	3 of 3	86 min	24 h
246	Edinburg 3.0 WIL-CN-4	99.1	Volunteer	Christian	100%	3 of 3	86 min	24 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.