| Current Weather Conditions | Alton/St. Louis, St. Louis Regional Airport, IL, United States |
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| (KALN) 38-54N 090-03W | ||
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| Conditions at | ||
| Wind | from the NW (310 degrees) at 12 MPH (10 KT) gusting to 17 MPH (15 KT) | |
| Visibility | 10 mile(s) | |
| Sky conditions | clear | |
| Temperature | 31.1 F (-0.5 C) | |
| Windchill | 21 F (-6 C) | |
| Dew Point | 15.8 F (-9.0 C) | |
| Relative Humidity | 52% | |
| Pressure (altimeter) | 30.48 in. Hg (1032 hPa) | |
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24 Hour Summary |
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| Time EST (UTC) |
Temperature F (C) |
Dew Point F (C) |
Pressure Inches (hPa) |
Wind MPH |
Weather | ||
| Latest | 11 PM (4) Nov 20 | 31.1 (-0.5) | 15.8 (-9.0) | 30.48 (1032) | NW 12 | ||
| 10 PM (3) Nov 20 | 32.0 (0.0) | 15.6 (-9.1) | 30.47 (1031) | NW 10 | |||
| 9 PM (2) Nov 20 | 33.1 (0.6) | 16.5 (-8.6) | 30.46 (1031) | NW 10 | |||
| 8 PM (1) Nov 20 | 34.2 (1.2) | 15.8 (-9.0) | 30.44 (1030) | NW 14 | |||
| 7 PM (0) | No Data | ||||||
| 6 PM (23) Nov 20 | 35 (2) | 21 (-6) | 30.41 (1029) | NW 12 | |||
| 5 PM (22) | No Data | ||||||
| 4 PM (21) | No Data | ||||||
| 3 PM (20) Nov 20 | 35 (2) | 24 (-4) | 30.35 (1027) | NW 18 | |||
| 2 PM (19) Nov 20 | 37 (3) | 23 (-5) | 30.36 (1028) | NW 17 | |||
| 1 PM (18) Nov 20 | 37 (3) | 24 (-4) | 30.36 (1028) | NNW 20 | |||
| Noon (17) Nov 20 | 37 (3) | 26 (-3) | 30.37 (1028) | NW 16 | |||
| 11 AM (16) Nov 20 | 37 (3) | 26 (-3) | 30.36 (1028) | NW 16 | |||
| 10 AM (15) Nov 20 | 37 (3) | 26 (-3) | 30.35 (1027) | NNW 18 | |||
| 9 AM (14) Nov 20 | 37 (3) | 28 (-2) | 30.34 (1027) | NNW 17 | |||
| 8 AM (13) Nov 20 | 37 (3) | 28 (-2) | 30.31 (1026) | NW 18 | |||
| 7 AM (12) | No Data | ||||||
| 6 AM (11) Nov 20 | 38.5 (3.6) | 29.8 (-1.2) | 30.29 (1025) | NW 9 | |||
| 5 AM (10) Nov 20 | 38.7 (3.7) | 30.2 (-1.0) | 30.28 (1025) | NW 9 | |||
| 4 AM (9) Nov 20 | 38.5 (3.6) | 30.7 (-0.7) | 30.26 (1024) | NW 6 | |||
| 3 AM (8) Nov 20 | 38.3 (3.5) | 30.4 (-0.9) | 30.25 (1024) | NNW 10 | |||
| 2 AM (7) Nov 20 | 36.7 (2.6) | 31.8 (-0.1) | 30.22 (1023) | NNW 7 | |||
| 1 AM (6) Nov 20 | 36.9 (2.7) | 31.1 (-0.5) | 30.22 (1023) | NNW 8 | |||
| Oldest | Midnight (5) Nov 20 | 38.5 (3.6) | 32.0 (0.0) | 30.2 (1022) | N 14 | ||
| Time EST (UTC) |
Temperature F(C) |
Dew Point F(C) |
Pressure Inches(hPa) |
Wind (MPH) |
Weather | ||
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