Live/247 Rank/Iowa

Iowa 24/7 Rank

Every station in Iowa 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.

1,027 stations ranked28.4% sent every report dueranked October 4, 2026page 1 of 5Iowa instrumentsIowa 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 1,027 ranked here, 1,020 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 days 30 days90 days

every report90 to 99%under 90%

Every station, ranked

Rank	Station	Score	Network	County	Received	Reports	Arrives in	Longest silence
1	Des MoinesDSM	100.0	Airport	Polk	100%	168 of 168	5 min	66 min
2	Sioux CitySUX	99.8	Airport	Woodbury	100%	168 of 168	7 min	84 min
3	Elliot - Tarkio RiverTRKI4	99.8	Gauge	Montgomery	100%	168 of 168	10 min	60 min
4	Davenport 6NDVNI4	99.8	Cooperative	Scott	100%	28 of 28	12 min	6 h
5	DecorahDCRI4	99.8	Cooperative	Winneshiek	100%	7 of 7	2 min	24 h
6	Dubuque L&D 11DLDI4	99.8	Cooperative	Dubuque	100%	7 of 7	3 min	24 h
7	Le MarsLEMI4	99.8	Cooperative	Plymouth	100%	7 of 7	3 min	24 h
8	Webster CityWEBI4	99.8	Cooperative	Hamilton	100%	7 of 7	13 min	24 h
9	OttumwaOTWI4	99.8	Cooperative	Wapello	100%	7 of 7	13 min	24 h
10	SigourneySGYI4	99.8	Cooperative	Keokuk	100%	7 of 7	13 min	24 h
11	Chariton 1 ECHRI4	99.8	Cooperative	Lucas	100%	7 of 7	13 min	25 h
12	Winterset 2 NNWWTRI4	99.8	Cooperative	Madison	100%	7 of 7	14 min	25.3 h
13	Fort Dodge 5 NNWWMTI4	99.8	Cooperative	Webster	100%	7 of 7	22 min	25.6 h
14	Remsen No. 2RMSI4	99.8	Cooperative	Plymouth	100%	7 of 7	22 min	27 h
15	BooneBNWI4	99.8	Cooperative	Boone	100%	7 of 7	23 min	25 h
16	Muscatine 2 NMSTI4	99.8	Cooperative	Muscatine	100%	7 of 7	23 min	24 h
17	Des Moines WavelandWGCI4	99.8	Cooperative	Polk	100%	7 of 7	23 min	24 h
17	WashingtonWSHI4	99.8	Cooperative	Washington	100%	7 of 7	23 min	24 h
19	Bellevue LD 12BLVI4	99.8	Cooperative	Jackson	100%	7 of 7	23 min	24 h
19	PrimgharPGHI4	99.8	Cooperative	O Brien	100%	7 of 7	23 min	24 h
19	Sioux City AirportSXGI4	99.8	Cooperative	Woodbury	100%	7 of 7	23 min	24 h
22	Keokuk L&D 19EOKI4	99.8	Cooperative	Lee	100%	7 of 7	23 min	24 h
22	PocahontasPOCI4	99.8	Cooperative	Pocahontas	100%	7 of 7	23 min	24 h
24	Bloomfield 1 WNWBLMI4	99.8	Cooperative	Davis	100%	7 of 7	23 min	25 h
25	Ames 8 WSWAMSI4	99.8	Cooperative	Boone	100%	7 of 7	23 min	24.3 h
26	SibleySIBI4	99.8	Cooperative	Osceola	100%	7 of 7	33 min	34 h
27	CorningCRNI4	99.8	Cooperative	Adams	100%	7 of 7	33 min	24 h
27	DonnellsonDNNI4	99.8	Cooperative	Lee	100%	7 of 7	33 min	24 h
29	Iowa CityICYI4	99.8	Cooperative	Johnson	100%	7 of 7	42 min	24 h
30	Little Sioux 2 NWLSXI4	99.8	Cooperative	Harrison	100%	7 of 7	52 min	24 h
31	OsceolaOSEI4	99.8	Cooperative	Clarke	100%	7 of 7	53 min	24 h
32	Indianola 4 WIDAI4	99.8	Cooperative	Warren	100%	7 of 7	63 min	24 h
33	Guthrie CenterGTHI4	99.8	Cooperative	Guthrie	100%	7 of 7	73 min	24 h
33	OaklandOAKI4	99.8	Cooperative	Pottawattamie	100%	7 of 7	73 min	24 h
35	Pella 1 SPEAI4	99.8	Cooperative	Marion	100%	7 of 7	73 min	24 h
36	ClutierCLUI4	99.8	Cooperative	Tama	100%	7 of 7	83 min	24 h
37	Charles CityCIYI4	99.8	Cooperative	Floyd	100%	7 of 7	83 min	24 h
38	Lake ParkLKPI4	99.8	Cooperative	Dickinson	100%	7 of 7	1.5 h	24 h
39	MonticelloMCLI4	99.8	Cooperative	Jones	100%	7 of 7	1.5 h	26 h
40	LoganLOGI4	99.8	Cooperative	Harrison	100%	7 of 7	1.7 h	24 h
41	Council Bluffs 2.1 SSEIA-PT-13	99.8	Volunteer	Pottawattamie	100%	3 of 3	26 min	25 h
42	Waterloo 6.7 EIA-BH-26	99.8	Volunteer	Black Hawk	100%	3 of 3	26 min	24 h
42	Waukee 1.2 ENEIA-DL-22	99.8	Volunteer	Dallas	100%	3 of 3	26 min	24 h
42	Bloomfield 8.4 NNEIA-DV-10	99.8	Volunteer	Davis	100%	3 of 3	26 min	24 h
42	Sully 0.3 ESEIA-JS-10	99.8	Volunteer	Jasper	100%	3 of 3	26 min	24 h
46	Marengo 2.6 SSWIA-IA-2	99.8	Volunteer	Iowa	100%	3 of 3	26 min	25 h
47	Farmington 3.5 WIA-VB-3	99.8	Volunteer	Van Buren	100%	3 of 3	26 min	27 h
47	Farmington 0.3 NWIA-VB-7	99.8	Volunteer	Van Buren	100%	3 of 3	26 min	27 h
47	Farmington 2.4 WIA-VB-8	99.8	Volunteer	Van Buren	100%	3 of 3	26 min	27 h
47	Farmington 0.4 NNWIA-VB-9	99.8	Volunteer	Van Buren	100%	3 of 3	26 min	27 h
51	Independence 0.9 WNWIA-BC-8	99.8	Volunteer	Buchanan	100%	3 of 3	26 min	24 h
51	La Porte City 4.5 EIA-BH-34	99.8	Volunteer	Black Hawk	100%	3 of 3	26 min	24 h
51	Madrid 0.5 NEIA-BN-20	99.8	Volunteer	Boone	100%	3 of 3	26 min	24 h
51	Lytton 4.0 NEIA-CH-7	99.8	Volunteer	Calhoun	100%	3 of 3	26 min	24 h
51	New Hampton 0.4 SWIA-CW-2	99.8	Volunteer	Chickasaw	100%	3 of 3	26 min	24 h
51	Burlington 6.5 SSWIA-DM-7	99.8	Volunteer	Des Moines	100%	3 of 3	26 min	24 h
51	Milton 4.8 SSWIA-DV-11	99.8	Volunteer	Davis	100%	3 of 3	26 min	24 h
51	Dundee 1.4 NNEIA-DW-10	99.8	Volunteer	Delaware	100%	3 of 3	26 min	24 h
51	Mount Union 3.6 SIA-HY-9	99.8	Volunteer	Henry	100%	3 of 3	26 min	24 h
51	Iowa City 1.5 ENEIA-JH-30	99.8	Volunteer	Johnson	100%	3 of 3	26 min	24 h
51	Iowa City 1.0 NEIA-JH-39	99.8	Volunteer	Johnson	100%	3 of 3	26 min	24 h
51	Iowa City 2.0 WSWIA-JH-61	99.8	Volunteer	Johnson	100%	3 of 3	26 min	24 h
51	West Point 7.5 NWIA-LE-11	99.8	Volunteer	Lee	100%	3 of 3	26 min	24 h
51	Fort Madison 4.5 NNWIA-LE-20	99.8	Volunteer	Lee	100%	3 of 3	26 min	24 h
51	Osage 4.7 EIA-MT-1	99.8	Volunteer	Mitchell	100%	3 of 3	26 min	24 h
51	Ankeny 1.5 NNEIA-PK-97	99.8	Volunteer	Polk	100%	3 of 3	26 min	24 h
51	Malcom 7.7 NNWIA-PW-6	99.8	Volunteer	Poweshiek	100%	3 of 3	26 min	24 h
51	Nevada 0.4 WNWIA-SR-59	99.8	Volunteer	Story	100%	3 of 3	26 min	24 h
51	Eldridge 0.7 SSWIA-ST-30	99.8	Volunteer	Scott	100%	3 of 3	26 min	24 h
51	Davenport 0.9 WNWIA-ST-37	99.8	Volunteer	Scott	100%	3 of 3	26 min	24 h
51	Davenport 4.3 NEIA-ST-65	99.8	Volunteer	Scott	100%	3 of 3	26 min	24 h
51	Le Claire 2.0 WSWIA-ST-67	99.8	Volunteer	Scott	100%	3 of 3	26 min	24 h
51	Creston 0.8 NWIA-UN-6	99.8	Volunteer	Union	100%	3 of 3	26 min	24 h
51	Ottumwa 2.2 ENEIA-WP-13	99.8	Volunteer	Wapello	100%	3 of 3	26 min	24 h
51	Norwalk 1.6 SSWIA-WR-25	99.8	Volunteer	Warren	100%	3 of 3	26 min	24 h
51	Kalona 2.6 WSWIA-WS-14	99.8	Volunteer	Washington	100%	3 of 3	26 min	24 h
51	Seymour 1.7 WIA-WY-3	99.8	Volunteer	Wayne	100%	3 of 3	26 min	24 h
78	Nevada 0.3 WNWIA-SR-58	99.8	Volunteer	Story	100%	3 of 3	26 min	25 h
78	Fort Dodge 1.6 ENEIA-WB-3	99.8	Volunteer	Webster	100%	3 of 3	26 min	25 h
80	Tipton 5.0 WIA-CD-12	99.8	Volunteer	Cedar	100%	3 of 3	26 min	26 h
81	Harpers Ferry 6.4 SSWIA-AL-7	99.8	Volunteer	Allamakee	100%	3 of 3	26 min	24 h
81	Osceola 2.5 WSWIA-CL-2	99.8	Volunteer	Clarke	100%	3 of 3	26 min	24 h
81	Iowa City 3.5 EIA-JH-63	99.8	Volunteer	Johnson	100%	3 of 3	26 min	24 h
81	Urbandale 1.0 NNEIA-PK-125	99.8	Volunteer	Polk	100%	3 of 3	26 min	24 h
81	Westfield 6.1 SEIA-PL-10	99.8	Volunteer	Plymouth	100%	3 of 3	26 min	24 h
81	Earling 2.4 SEIA-SH-8	99.8	Volunteer	Shelby	100%	3 of 3	26 min	24 h
81	Ireton 5.5 NIA-SX-15	99.8	Volunteer	Sioux	100%	3 of 3	26 min	24 h
88	Fort Dodge 1.7 NNWIA-WB-17	99.8	Volunteer	Webster	100%	3 of 3	26 min	26 h
89	North Liberty 0.7 SSWIA-JH-27	99.8	Volunteer	Johnson	100%	3 of 3	85 min	24 h
89	Windsor Heights 0.8 SEIA-PK-37	99.8	Volunteer	Polk	100%	3 of 3	85 min	24 h
91	Waterloo 1.1 SIA-BH-33	99.8	Volunteer	Black Hawk	100%	3 of 3	85 min	26 h
92	Winthrop 5.6 NNEIA-BC-9	99.8	Volunteer	Buchanan	100%	3 of 3	86 min	24 h
92	Elkader 6.8 WSWIA-CT-8	99.8	Volunteer	Clayton	100%	3 of 3	86 min	24 h
94	Numa 1.7 WIA-AP-9	99.8	Volunteer	Appanoose	100%	3 of 3	86 min	25 h
94	Waukee 3.0 SSWIA-DL-28	99.8	Volunteer	Dallas	100%	3 of 3	86 min	25 h
94	Iowa City 1.5 NNEIA-JH-64	99.8	Volunteer	Johnson	100%	3 of 3	86 min	25 h
94	Marion 1.7 NNWIA-LN-27	99.8	Volunteer	Linn	100%	3 of 3	86 min	25 h
94	Marion 0.4 NNWIA-LN-59	99.8	Volunteer	Linn	100%	3 of 3	86 min	25 h
99	Hayesville 0.2 SWIA-KK-7	99.8	Volunteer	Keokuk	100%	3 of 3	86 min	26 h
100	Eagle Grove 0.7 WIA-WG-7	99.8	Volunteer	Wright	100%	3 of 3	86 min	28 h
101	Spencer 7.0 SIA-CY-6	99.8	Volunteer	Clay	100%	3 of 3	86 min	24 h
101	Lake Park 3.2 SSEIA-DK-3	99.8	Volunteer	Dickinson	100%	3 of 3	86 min	24 h
101	Solon 0.4 WNWIA-JH-37	99.8	Volunteer	Johnson	100%	3 of 3	86 min	24 h
101	Marion 3.3 NIA-LN-70	99.8	Volunteer	Linn	100%	3 of 3	86 min	24 h
101	Imogene 2.7 NNEIA-ML-8	99.8	Volunteer	Mills	100%	3 of 3	86 min	24 h
101	Lovilia 0.6 SSEIA-MR-6	99.8	Volunteer	Monroe	100%	3 of 3	86 min	24 h
101	Des Moines 4.5 WNWIA-PK-3	99.8	Volunteer	Polk	100%	3 of 3	86 min	24 h
101	Clare 5.2 WNWIA-WB-15	99.8	Volunteer	Webster	100%	3 of 3	86 min	24 h
101	Decorah 7.9 ENEIA-WH-1	99.8	Volunteer	Winneshiek	100%	3 of 3	86 min	24 h
110	Mount Auburn 0.1 SSWIA-BT-24	99.8	Volunteer	Benton	100%	3 of 3	86 min	25 h
110	Milford 1.4 NNEIA-DK-15	99.8	Volunteer	Dickinson	100%	3 of 3	86 min	25 h
110	Salem 3.1 ESEIA-HY-5	99.8	Volunteer	Henry	100%	3 of 3	86 min	25 h
110	Parnell 0.1 SSWIA-IA-13	99.8	Volunteer	Iowa	100%	3 of 3	86 min	25 h
114	Creston 8.3 WNWIA-AD-2	99.8	Volunteer	Adams	100%	3 of 3	86 min	26 h
115	Jerome 0.4 WIA-AP-12	99.8	Volunteer	Appanoose	100%	3 of 3	86 min	24 h
115	McGregor 6.4 WNWIA-CT-9	99.8	Volunteer	Clayton	100%	3 of 3	86 min	24 h
115	Bellevue 12.2 NWIA-DB-31	99.8	Volunteer	Dubuque	100%	3 of 3	86 min	24 h
115	Lineville 3.8 WIA-DC-8	99.8	Volunteer	Decatur	100%	3 of 3	86 min	24 h
115	Bloomfield 4.2 WNWIA-DV-7	99.8	Volunteer	Davis	100%	3 of 3	86 min	24 h
115	Logan 0.8 WNWIA-HR-16	99.8	Volunteer	Harrison	100%	3 of 3	86 min	24 h
115	Iowa City 1.4 NNEIA-JH-58	99.8	Volunteer	Johnson	100%	3 of 3	86 min	24 h
115	Wapello 5.4 SEIA-LS-5	99.8	Volunteer	Louisa	100%	3 of 3	86 min	24 h
115	Sac City 0.6 SSWIA-SC-7	99.8	Volunteer	Sac	100%	3 of 3	86 min	24 h
115	Ames 2.5 WIA-SR-29	99.8	Volunteer	Story	100%	3 of 3	86 min	24 h
115	Park View 0.2 WSWIA-ST-3	99.8	Volunteer	Scott	100%	3 of 3	86 min	24 h
115	Vining 0.2 ENEIA-TM-4	99.8	Volunteer	Tama	100%	3 of 3	86 min	24 h
115	New Market 4.7 NIA-TY-2	99.8	Volunteer	Taylor	100%	3 of 3	86 min	24 h
115	Indianola 0.8 SSWIA-WR-7	99.8	Volunteer	Warren	100%	3 of 3	86 min	24 h
115	Ainsworth 7.4 NIA-WS-2	99.8	Volunteer	Washington	100%	3 of 3	86 min	24 h
115	Promise City 0.6 WIA-WY-4	99.8	Volunteer	Wayne	100%	3 of 3	86 min	24 h
131	Waterloo 1.9 SSEIA-BH-6	99.8	Volunteer	Black Hawk	100%	3 of 3	86 min	25 h
131	Thurman 7.1 SSEIA-FM-6	99.8	Volunteer	Fremont	100%	3 of 3	86 min	25 h
131	Solon 0.3 ESEIA-JH-1	99.8	Volunteer	Johnson	100%	3 of 3	86 min	25 h
131	Hartford 1.0 EIA-WR-5	99.8	Volunteer	Warren	100%	3 of 3	86 min	25 h
131	Wellman 4.0 EIA-WS-7	99.8	Volunteer	Washington	100%	3 of 3	86 min	25 h
136	La Porte City 5.1 NNWIA-BH-29	99.8	Volunteer	Black Hawk	100%	3 of 3	86 min	26 h
137	Ankeny 1.2 ENEIA-PK-148	99.8	Volunteer	Polk	100%	3 of 3	2.4 h	24 h
138	Ely 0.5 SEIA-LN-3	99.8	Volunteer	Linn	100%	3 of 3	2.4 h	25 h
139	Center Point 0.5 NIA-LN-66	99.8	Volunteer	Linn	100%	3 of 3	2.4 h	24 h
139	Pleasant Hill 3.2 EIA-PK-121	99.8	Volunteer	Polk	100%	3 of 3	2.4 h	24 h
141	Postville 5.5 NEIA-AL-6	99.8	Volunteer	Allamakee	100%	3 of 3	2.4 h	24 h
141	Eldora 1.2 ENEIA-HD-5	99.8	Volunteer	Hardin	100%	3 of 3	2.4 h	24 h
141	Altoona 1.5 SSEIA-PK-83	99.8	Volunteer	Polk	100%	3 of 3	2.4 h	24 h
144	Ames 1.5 NNEIA-SR-2	99.8	Volunteer	Story	100%	3 of 3	2.4 h	24 h
145	Chariton 2.0 WSWIA-LC-12	99.8	Volunteer	Lucas	100%	3 of 3	2.4 h	24 h
146	Le Mars 1.0 EIA-PL-9	99.8	Volunteer	Plymouth	100%	3 of 3	2.4 h	24 h
147	LamoniLWD	99.8	Airport	Decatur	99.4%	167 of 168	6 min	2 h
148	WaterlooALO	99.6	Airport	Black Hawk	99.4%	167 of 168	6 min	81 min
149	DubuqueDBQ	99.5	Airport	Dubuque	100%	168 of 168	6 min	60 min
150	Sac CitySACI4	99.4	Cooperative	Sac	100%	7 of 7	3.4 h	24 h
151	Prairie CityRPRI4	99.4	Road	Polk	99.6%	502 of 504	11 min	40 min
152	AmesAMW	99.4	Airport	Story	99.4%	167 of 168	6 min	1.8 h
153	Lizard Creek 5 WNW Fort DodgeFLZI4	99.4	Gauge	Webster	98.8%	166 of 168	10 min	2 h
153	Oran - Little WapsiORNI4	99.4	Gauge	Fayette	98.8%	166 of 168	10 min	2 h
155	Mondamin 1.7 SSWIA-HR-7	99.3	Volunteer	Harrison	100%	3 of 3	3.4 h	24 h
155	Earlham 2.0 WIA-MD-3	99.3	Volunteer	Madison	100%	3 of 3	3.4 h	24 h
157	Coralville 1.4 SIA-JH-20	99.3	Volunteer	Johnson	100%	3 of 3	3.4 h	24 h
158	Leon 7.1 SEIA-DC-13	99.3	Volunteer	Decatur	100%	3 of 3	3.4 h	24 h
158	Gilbert 0.2 WIA-SR-19	99.3	Volunteer	Story	100%	3 of 3	3.4 h	24 h
158	Decorah 4.9SEIA-WH-5	99.3	Volunteer	Winneshiek	100%	3 of 3	3.4 h	24 h
161	Mount Auburn 2.2 NNWIA-BT-11	99.3	Volunteer	Benton	100%	3 of 3	3.4 h	2 days
162	MarshalltownMIW	99.3	Airport	Marshall	99.4%	167 of 168	6 min	79 min
163	Mason CityMCW	99.3	Airport	Cerro Gordo	98.8%	166 of 168	6 min	2 h
164	Mount AyrRMOI4	99.2	Road	Ringgold	99.8%	503 of 504	13 min	40 min
165	Fort DodgeFOD	99.2	Airport	Webster	99.4%	167 of 168	12 min	76 min
166	MilnervilleBKTI4	99.1	Gauge	Plymouth	100%	168 of 168	14 min	60 min
167	SpencerSPW	99.1	Airport	Clay	98.8%	166 of 168	6 min	2 h
168	BloomfieldRBMI4	99.1	Road	Davis	98.6%	497 of 504	11 min	43 min
169	GrinnellRGII4	99.0	Road	Jasper	99.4%	501 of 504	13 min	40 min
170	BurlingtonBRL	99.0	Airport	Des Moines	98.8%	166 of 168	6 min	2 h
171	Des Moines River 1 S OttumwaOTMI4	98.9	Gauge	Wapello	100%	336 of 336	15 min	40 min
172	Iowa CityIOW	98.9	Airport	Johnson	100%	168 of 168	7 min	60 min
173	Quad CitiesDVN	98.9	Airport	Scott	100%	168 of 168	7 min	60 min
174	South Skunk River 4 N OskaloosaOOAI4	98.9	Gauge	Mahaska	100%	168 of 168	15 min	60 min
175	Fourmile Creek 3 N Ankeny US 69AKNI4	98.9	Gauge	Polk	100%	168 of 168	15 min	61 min
175	Altoona I-80ATNI4	98.9	Gauge	Polk	100%	168 of 168	15 min	61 min
175	Iowa River AT Coralville DamCRVI4	98.9	Gauge	Johnson	100%	168 of 168	15 min	61 min
175	Iowa River AT Coralville Res TailCTWI4	98.9	Gauge	Johnson	100%	168 of 168	15 min	61 min
175	WATERLOO CREEK 1 S DorchesterDWCI4	98.9	Gauge	Allamakee	100%	168 of 168	15 min	61 min
175	Ankeny 2 SEFMBI4	98.9	Gauge	Polk	100%	168 of 168	15 min	61 min
175	West Des MoinesJDAI4	98.9	Gauge	Dallas	100%	168 of 168	15 min	61 min
175	Lacey - Middle CreekLCYI4	98.9	Gauge	Mahaska	100%	168 of 168	15 min	61 min
175	Iowa River 3 W Tama Hwy E49TMAI4	98.9	Gauge	Tama	100%	168 of 168	15 min	61 min
175	Walnut Creek 5 W Urbandale 142nd StUBWI4	98.9	Gauge	Polk	100%	168 of 168	15 min	61 min
175	West Branch - Wapsinonoc CreekWBWI4	98.9	Gauge	Cedar	100%	168 of 168	15 min	61 min
175	Grimes 4 WSWWCCI4	98.9	Gauge	Dallas	100%	168 of 168	15 min	61 min
175	Welton - Silver CreekWLTI4	98.9	Gauge	Clinton	100%	168 of 168	15 min	61 min
188	North Walnut Creek at Urbandale MeredithUBMI4	98.9	Gauge	Polk	100%	168 of 168	15 min	63 min
189	Fourmile Creek near Alleman NW 142ndALMI4	98.9	Gauge	Polk	100%	168 of 168	15 min	64 min
189	Waukee 2 NNWWCDI4	98.9	Gauge	Dallas	100%	168 of 168	15 min	64 min
191	Cedar River 0 ENE WaterlooALOI4	98.9	Gauge	Black Hawk	100%	168 of 168	15 min	61 min
192	East Nishnabotna River 5 SW AtlanticATCI4	98.9	Gauge	Cass	100%	168 of 168	15 min	61 min
192	Iowa River 1 N MarshalltownMIWI4	98.9	Gauge	Marshall	100%	168 of 168	15 min	61 min
194	De Witt 5.4 ENEIA-CN-20	98.9	Volunteer	Clinton	100%	3 of 3	4.4 h	24 h
195	Sidney 5.1 NNEIA-FM-1	98.9	Volunteer	Fremont	100%	3 of 3	4.4 h	24 h
196	Fairfax 4.0 NWIA-BT-12	98.9	Volunteer	Benton	100%	3 of 3	4.4 h	24 h
196	Cherokee 4.5 NNWIA-CK-8	98.9	Volunteer	Cherokee	100%	3 of 3	4.4 h	24 h
198	Nevada 4.6 SIA-SR-34	98.9	Volunteer	Story	100%	3 of 3	4.4 h	24 h
199	Murray 0.5 NIA-CL-3	98.9	Volunteer	Clarke	100%	3 of 3	4.4 h	24 h
199	Murray 1.7 WIA-CL-4	98.9	Volunteer	Clarke	100%	3 of 3	4.4 h	24 h
201	AkronRAWI4	98.9	Road	Plymouth	99.6%	502 of 504	14 min	40 min
202	Prairie City 3SW - Neal Smith RAWSNSWI4	98.9	Gauge	Jasper	99.4%	167 of 168	14 min	2 h
203	West Nishnabotna River AT HancockHNKI4	98.8	Gauge	Pottawattamie	100%	168 of 168	15 min	61 min
203	Soldier River AT PisgahPSGI4	98.8	Gauge	Harrison	100%	168 of 168	15 min	61 min
203	West Nishnabotna River 1 W RandolphRDPI4	98.8	Gauge	Fremont	100%	168 of 168	15 min	61 min
206	Mississippi River AT CamancheCMMI4	98.7	Gauge	Clinton	99.4%	167 of 168	15 min	2 h
206	Mississippi River AT DubuqueDBQI4	98.7	Gauge	Dubuque	99.4%	167 of 168	15 min	2 h
206	Wapsipinicon River 4 S De Witt 4SDEWI4	98.7	Gauge	Scott	99.4%	167 of 168	15 min	2 h
206	Stantion - East Tarkio CreekETRI4	98.7	Gauge	Montgomery	99.4%	167 of 168	15 min	2 h
206	Wapsipinicon River AT IndependenceIDPI4	98.7	Gauge	Buchanan	99.4%	167 of 168	15 min	2 h
206	Oakland Mills 3W - Cedar CreekOKMI4	98.7	Gauge	Henry	99.4%	167 of 168	15 min	2 h
206	North Skunk River 2 S SigourneySIGI4	98.7	Gauge	Keokuk	99.4%	167 of 168	15 min	2 h
213	Iowa River 3 S Belle PlaineBPLI4	98.7	Gauge	Benton	99.4%	167 of 168	15 min	2 h
213	Little Sioux River 1 W CorrectionvilleCRRI4	98.7	Gauge	Woodbury	99.4%	167 of 168	15 min	2 h
213	Floyd River 1 NE JamesJMEI4	98.7	Gauge	Plymouth	99.4%	167 of 168	15 min	2 h
213	Little Sioux River AT Linn GroveLNNI4	98.7	Gauge	Buena Vista	99.4%	167 of 168	15 min	2 h
213	Iowa River AT MarengoMROI4	98.7	Gauge	Iowa	99.4%	167 of 168	15 min	2 h
213	Iowa River 1 S Tama US 63TAMI4	98.7	Gauge	Tama	99.4%	167 of 168	15 min	2 h
219	CleghornRCGI4	98.6	Road	Cherokee	98.4%	496 of 504	13 min	41 min
220	NWS Des MoinesDMX	98.6	Cooperative	Polk	96.4%	27 of 28	32 min	13 h
221	Mason CityMCWI4	98.5	Cooperative	Cerro Gordo	100%	7 of 7	-	24 h
222	Anamosa 3SSWAMOI4	98.5	Cooperative	Jones	100%	7 of 7	-	26 h
223	Mississippi River AT FairportFAII4	98.5	Gauge	Muscatine	98.8%	166 of 168	15 min	2 h
223	Rickardsville - MaquoketaRKDI4	98.5	Gauge	Dubuque	98.8%	166 of 168	15 min	2 h
225	Rock River AT Rock ValleyRKVI4	98.5	Gauge	Sioux	98.8%	166 of 168	15 min	2 h
226	Melrose 6.8 SSEIA-AP-11	98.4	Volunteer	Appanoose	100%	3 of 3	5.4 h	24 h
227	Iowa City 2.7 EIA-JH-41	98.4	Volunteer	Johnson	100%	3 of 3	5.4 h	2 days
228	Drakesville 7.4 NNWIA-DV-13	98.4	Volunteer	Davis	100%	3 of 3	5.4 h	24 h
229	Fonda 4.5 NNWIA-PC-8	98.4	Volunteer	Pocahontas	100%	3 of 3	5.4 h	24 h
230	LelandRLDI4	98.4	Road	Winnebago	99.2%	500 of 504	16 min	40 min
231	UnderwoodUNDI4	98.3	Cooperative	Pottawattamie	100%	7 of 7	5.7 h	24 h
232	RiversideRRII4	98.3	Road	Washington	98.8%	498 of 504	16 min	40 min
233	Walnut Creek 3 WNW Clive I-80/35CLVI4	98.2	Gauge	Polk	99.2%	667 of 672	17 min	32 min
234	Floyd River AT AltonALTI4	98.2	Gauge	Sioux	98.2%	165 of 168	15 min	2 h
234	Cedar Rapids - Cedar River at Edgewood RdCREI4	98.2	Gauge	Linn	98.2%	165 of 168	15 min	2 h
236	PleasantvilleRPEI4	98.2	Road	Marion	97.8%	493 of 504	14 min	40 min
237	Raccoon River 0 ENE Van MeterVNMI4	98.1	Gauge	Dallas	99.4%	668 of 672	18 min	30 min
238	Farmington 1ENE - Shimek State Forest RAWSFRMI4	98.1	Gauge	Van Buren	99.4%	167 of 168	18 min	2 h
238	Lucas 2SSW - Stephens State Forest RAWSSSFI4	98.1	Gauge	Lucas	99.4%	167 of 168	18 min	2 h
238	Harpers Ferry 5WSW - Yellow River Park RAWSYSPI4	98.1	Gauge	Allamakee	99.4%	167 of 168	18 min	2 h
241	WilliamsRWMI4	98.1	Road	Hamilton	98.2%	495 of 504	15 min	40 min
242	North River 2 SE NorwalkNRWI4	98.0	Gauge	Warren	100%	229 of 229	19 min	45 min
243	Des Moines River 1 NW Des Moines 2nd AveDMOI4	98.0	Gauge	Polk	100%	229 of 229	19 min	45 min
244	Carpenter - Deer CreekCTRI4	98.0	Gauge	Mitchell	100%	168 of 168	19 min	75 min
245	Toledo 3 NTLDI4	98.0	Cooperative	Tama	100%	7 of 7	6.4 h	24 h
246	Adel 0.2 NIA-DL-38	98.0	Volunteer	Dallas	100%	3 of 3	6.4 h	24 h
247	Polk City 1SE - Big Creek PoundingBIGI4	97.9	Gauge	Polk	100%	168 of 168	19 min	76 min
248	JeffersonEFWI4	97.9	Gauge	Greene	100%	168 of 168	19 min	60 min
248	Beaver Creek 3 E GrimesGRMI4	97.9	Gauge	Polk	100%	168 of 168	19 min	60 min
248	North Raccoon River 5 S Sac CitySCRI4	97.9	Gauge	Sac	100%	168 of 168	19 min	60 min

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.