1. Station Data & Metadata
  2. IL_ASOS
or Select from map
Information Last Ob Photographs Meteogram Network Table Neighbors Monthly Summaries Observation History Wind Roses Custom Wind Roses Data Calendar Satellite Cloud Product Download

09 September 2025 Observation History, [ALN] ALTON/ST LOUIS R, timezone: America/Chicago

Time Wind
(mph)		 Vis.
(mi.)		 Sky Cond.
(100s ft)		 Present Wx Temperature (ºF) Relative
Humidity		 Pressure Snow
Depth
(in)		 Precipitation (in.)
Air Dwpt Feels Like 6 hour altimeter
(in.)		 sea level
(mb)		 1 hr 3 hr 6 hr
Max.Min.
12:15 AMCalm10 CLR
504650 88 30.180
KALN 090515Z AUTO 00000KT 10SM CLR 10/08 A3018 RMK AO2 T00970079
12:35 AMCalm10 CLR
484548 89 30.180
KALN 090535Z AUTO 00000KT 10SM CLR 09/07 A3018 RMK AO2 T00880071
12:55 AMCalm10 CLR
484548 67 48 89 30.180
KALN 090555Z AUTO 00000KT 10SM CLR 09/07 A3018 RMK AO2 T00900073 10195 20086 402430060
1:15 AMW 510 CLR
474445 89 30.170
KALN 090615Z AUTO 26004KT 10SM CLR 09/07 A3017 RMK AO2 T00850068
1:35 AMW 610 CLR
484446 84 30.170
KALN 090635Z AUTO 26005KT 10SM CLR 09/07 A3017 RMK AO2 T00900065
1:55 AMW 310 CLR
494448 83 30.170
KALN 090655Z AUTO 26003KT 10SM CLR 10/07 A3017 RMK AO2 T00960068
2:15 AMW 310 CLR
494448 83 30.170
KALN 090715Z AUTO 26003KT 10SM CLR 09/07 A3017 RMK AO2 T00920065
2:35 AMWSW 310 CLR
494448 84 30.160
KALN 090735Z AUTO 25003KT 10SM CLR 09/07 A3016 RMK AO2 T00930068
2:55 AMW 310 CLR
484447 86 30.160
KALN 090755Z AUTO 26003KT 10SM CLR 09/07 A3016 RMK AO2 T00880066
3:15 AMCalm10 CLR
474447 89 30.160
KALN 090815Z AUTO 00000KT 10SM CLR 08/07 A3016 RMK AO2 T00830067
3:35 AMCalm10 CLR
484548 87 30.160
KALN 090835Z AUTO 00000KT 10SM CLR 09/07 A3016 RMK AO2 T00910071
3:55 AMCalm10 CLR
474447 90 30.160
KALN 090855Z AUTO 00000KT 10SM CLR 09/07 A3016 RMK AO2 T00850069
4:15 AMCalm10 CLR
474447 90 30.170
KALN 090915Z AUTO 00000KT 10SM CLR 08/07 A3017 RMK AO2 T00810065
4:35 AMCalm10 CLR
474447 90 30.160
KALN 090935Z AUTO 00000KT 10SM CLR 08/07 A3016 RMK AO2 T00820067
4:55 AMCalm10 CLR
474547 90 30.160
KALN 090955Z AUTO 00000KT 10SM CLR 09/07 A3016 RMK AO2 T00850070
5:15 AMCalm10 CLR
474547 91 30.160
KALN 091015Z AUTO 00000KT 10SM CLR 09/07 A3016 RMK AO2 T00850071
5:35 AMCalm10 CLR
474547 92 30.160
KALN 091035Z AUTO 00000KT 10SM CLR 09/07 A3016 RMK AO2 T00850072
5:55 AMCalm10 CLR
474547 91 30.160
KALN 091055Z AUTO 00000KT 10SM CLR 09/07 A3016 RMK AO2 T00850071
6:15 AMCalm10 CLR
464446 92 30.160
KALN 091115Z AUTO 00000KT 10SM CLR 08/07 A3016 RMK AO2 T00790067
6:35 AMCalm10 CLR
464446 92 30.160
KALN 091135Z AUTO 00000KT 10SM CLR 08/07 A3016 RMK AO2 T00770065
6:50 AMCalm10 CLR
464546 93 30.160
KALN 091150Z 00000KT 10SM CLR 08/07 A3016
7:50 AMESE 310 CLR
524852 87 30.170
KALN 091250Z 11003KT 10SM CLR 11/09 A3017
8:50 AMESE 510 CLR
575057 77 30.160
KALN 091350Z 12004KT 10SM CLR 14/10 A3016
9:50 AMESE 310 CLR
635063 63 30.160
KALN 091450Z 12003KT 10SM CLR 17/10 A3016
10:50 AMSSE 710 CLR
685268 56 30.170
KALN 091550Z 15006KT 10SM CLR 20/11 A3017
11:50 AMS 610 CLR
735073 44 30.150
KALN 091650Z 17005KT 10SM CLR 23/10 A3015
12:50 PMVRB 510 CLR
775077 39 30.130
KALN 091750Z VRB04KT 10SM CLR 25/10 A3013

API: The IEM API webservice that provided data to this page. For more details, see documentation.

Data Notes

  • For recent years, this page also optionally shows observations from the MADIS High Frequency METAR dataset. This dataset had a problem with temperatures detailed here.