17 July 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 AM | Calm | 10 | CLR | VCTS | 29.94 | 0 | ||||||||||
| KALN 170515Z AUTO 00000KT 10SM VCTS CLR A2994 RMK AO2 LTG DSNT E | ||||||||||||||||
| 12:35 AM | Calm | 10 | SCT041 | VCTS | 29.94 | 0 | ||||||||||
| KALN 170535Z AUTO 00000KT 10SM VCTS SCT041 A2994 RMK AO2 LTG DSNT NE AND E | ||||||||||||||||
| 12:55 AM | Calm | 10 | SCT039 SCT060 SCT110 | 29.93 | 0 | |||||||||||
| KALN 170555Z AUTO 00000KT 10SM SCT039 SCT060 SCT110 A2993 RMK AO2 LTG DSNT W | ||||||||||||||||
| 1:15 AM | Calm | 10 | SCT039 SCT045 BKN050 | RA | 29.92 | 0 | ||||||||||
| KALN 170615Z AUTO 00000KT 10SM RA SCT039 SCT045 BKN050 A2992 RMK AO2 LTG DSNT ALQS | ||||||||||||||||
| 1:35 AM | Calm | 10 | SCT040 SCT045 BKN050 | TS | 29.93 | 0.01 | ||||||||||
| KALN 170635Z AUTO 00000KT 10SM TS SCT040 SCT045 BKN050 A2993 RMK AO2 LTG DSNT ALQS P0001 | ||||||||||||||||
| 1:55 AM | Calm | 10 | BKN048 BKN050 | TS | 29.93 | 0.01 | ||||||||||
| KALN 170655Z AUTO 00000KT 10SM TS BKN048 BKN050 A2993 RMK AO2 LTG DSNT ALQS P0001 | ||||||||||||||||
| 2:15 AM | Calm | 10 | BKN048 BKN065 BKN070 | VCTS | 29.93 | 0 | ||||||||||
| KALN 170715Z AUTO 00000KT 10SM VCTS BKN048 BKN065 BKN070 A2993 RMK AO2 LTG DSNT ALQS | ||||||||||||||||
| 2:35 AM | Calm | 10 | BKN046 | TS | 29.97 | 0 | ||||||||||
| KALN 170735Z AUTO 00000KT 10SM TS BKN046 A2997 RMK AO2 LTG DSNT ALQS | ||||||||||||||||
| 2:55 AM | Calm | 2.5 | SCT008 BKN046 OVC055 | +TSRA | 29.96 | 0.39 | ||||||||||
| KALN 170755Z AUTO 00000KT 2 1/2SM +TSRA SCT008 BKN046 OVC055 A2996 RMK AO2 LTG DSNT ALQS P0039 | ||||||||||||||||
| 3:15 AM | Calm | 3 | SCT016 BKN040 OVC075 | +TSRA | 29.96 | 0.24 | ||||||||||
| KALN 170815Z AUTO 00000KT 3SM +TSRA SCT016 BKN040 OVC075 A2996 RMK AO2 LTG DSNT ALQS P0024 | ||||||||||||||||
| 3:35 AM | Calm | 2.5 | BKN018 BKN035 OVC065 | TSRA | 29.96 | 0.56 | ||||||||||
| KALN 170835Z AUTO 00000KT 2 1/2SM TSRA BKN018 BKN035 OVC065 A2996 RMK AO2 LTG DSNT ALQS P0056 | ||||||||||||||||
| 3:55 AM | Calm | 10 | SCT019 SCT037 BKN070 | -TSRA | 29.93 | 0.57 | 1.02 | |||||||||
| KALN 170855Z AUTO 00000KT 10SM -TSRA SCT019 SCT037 BKN070 A2993 RMK AO2 LTG DSNT ALQS P0057 60102 | ||||||||||||||||
| 4:15 AM | Calm | 10 | SCT100 SCT120 | VCTS | 29.92 | 0 | ||||||||||
| KALN 170915Z AUTO 00000KT 10SM VCTS SCT100 SCT120 A2992 RMK AO2 LTG DSNT N THRU SE | ||||||||||||||||
| 4:35 AM | Calm | 10 | CLR | 29.93 | 0 | |||||||||||
| KALN 170935Z AUTO 00000KT 10SM CLR A2993 RMK AO2 LTG DSNT N AND SE | ||||||||||||||||
| 4:55 AM | Calm | 10 | SCT044 SCT055 | 29.95 | 0 | |||||||||||
| KALN 170955Z AUTO 00000KT 10SM SCT044 SCT055 A2995 RMK AO2 | ||||||||||||||||
| 5:15 AM | Calm | 10 | SCT044 | 29.96 | 0 | |||||||||||
| KALN 171015Z AUTO 00000KT 10SM SCT044 A2996 RMK AO2 | ||||||||||||||||
| 5:35 AM | Calm | 10 | CLR | 29.96 | 0 | |||||||||||
| KALN 171035Z AUTO 00000KT 10SM CLR A2996 RMK AO2 | ||||||||||||||||
| 5:55 AM | Calm | 10 | CLR | 29.98 | 0 | |||||||||||
| KALN 171055Z AUTO 00000KT 10SM CLR A2998 RMK AO2 | ||||||||||||||||
| 6:15 AM | Calm | 10 | CLR | 29.98 | 0 | |||||||||||
| KALN 171115Z AUTO 00000KT 10SM CLR A2998 RMK AO2 | ||||||||||||||||
| 6:35 AM | Calm | 7 | CLR | 29.99 | 0 | |||||||||||
| KALN 171135Z AUTO 00000KT 7SM CLR A2999 RMK AO2 | ||||||||||||||||
| 6:50 AM | VRB 3 | 6 | CLR | BR | 72 | 72 | 72 | 100 | 29.99 | 0 | ||||||
| KALN 171150Z VRB03KT 6SM BR CLR 22/22 A2999 | ||||||||||||||||
| 7:50 AM | VRB 3 | 10 | CLR | 73 | 72 | 73 | 94 | 30 | 0 | |||||||
| KALN 171250Z VRB03KT 10SM CLR 23/22 A3000 | ||||||||||||||||
| 8:50 AM | N 5 | 10 | SCT010 | 79 | 73 | 79 | 84 | 30 | 0 | |||||||
| KALN 171350Z 36004KT 10SM SCT010 26/23 A3000 | ||||||||||||||||
| 9:25 AM | NNE 8 | 10 | BKN010 | 77 | 73 | 77 | 89 | 30 | 0 | |||||||
| KALN 171425Z 03007KT 10SM BKN010 25/23 A3000 | ||||||||||||||||
| 9:50 AM | ENE 8 | 10 | BKN010 | 79 | 73 | 79 | 84 | 30 | 0 | |||||||
| KALN 171450Z 07007KT 10SM BKN010 26/23 A3000 | ||||||||||||||||
| 10:50 AM | ESE 3 | 10 | BKN010 | 81 | 73 | 85 | 79 | 30.02 | 0 | |||||||
| KALN 171550Z 12003KT 10SM BKN010 27/23 A3002 | ||||||||||||||||
| 11:50 AM | VRB 5 | 8 | BKN014 | 81 | 73 | 85 | 79 | 30.03 | 0 | |||||||
| KALN 171650Z VRB04KT 8SM BKN014 27/23 A3003 | ||||||||||||||||
| 12:50 PM | VRB 5 | 10 | BKN018 | 84 | 75 | 92 | 74 | 30.01 | 0 | |||||||
| KALN 171750Z VRB04KT 10SM BKN018 29/24 A3001 | ||||||||||||||||
| 1:50 PM | NE 6 | 10 | SCT018 BKN025 | 82 | 75 | 89 | 79 | 30.01 | 0 | |||||||
| KALN 171850Z 04005KT 10SM SCT018 BKN025 28/24 A3001 | ||||||||||||||||
| 2:50 PM | NNE 8 | 10 | SCT021 BKN048 | 84 | 75 | 92 | 74 | 29.98 | 0 | |||||||
| KALN 171950Z 03007KT 10SM SCT021 BKN048 29/24 A2998 | ||||||||||||||||
| 3:23 PM | N 8 | 10 | BKN025 BKN045 | 82 | 73 | 88 | 74 | 30 | 0 | |||||||
| KALN 172023Z 01007KT 10SM BKN025 BKN045 28/23 A3000 | ||||||||||||||||
| 3:48 PM | NNE 9 | 10 | SCT015 BKN045 | TS | 82 | 73 | 88 | 74 | 30 | 0 | ||||||
| KALN 172048Z 03008KT 10SM TS SCT015 BKN045 28/23 A3000 RMK TS S MOV E TSB48 | ||||||||||||||||
| 4:15 PM | NE 8 | 10 | BKN020 BKN045 | 84 | 72 | 90 | 66 | 30.01 | 0 | |||||||
| KALN 172115Z 04007KT 10SM BKN020 BKN045 29/22 A3001 RMK TSE15 | ||||||||||||||||
| 4:15 PM | NE 8 | 10 | BKN020 OVC045 | 84 | 72 | 90 | 66 | 30.01 | 0 | |||||||
| KALN 172115Z COR 04007KT 10SM BKN020 OVC045 29/22 A3001 RMK TSE15 | ||||||||||||||||
| 4:50 PM | SE 5 | 10 | BKN026 OVC055 | 82 | 72 | 87 | 70 | 30.01 | 0 | |||||||
| KALN 172150Z 13004KT 10SM BKN026 OVC055 28/22 A3001 RMK TSE15 | ||||||||||||||||
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.