St. Louis Regional Airport Alton, IL Weather

07:00 Friday Artboard
Partly cloudy Partly cloudy Feels like South South 7 - 15 km/h
  • Today 29 March Cloudy skies 22° / Calm 25 - 50 km/h
  • Tomorrow 30 March 60% 2.4 mm 23° / 12° Calm 23 - 48 km/h
  • Sunday 31 March Overcast 26° / 11° Calm 19 - 46 km/h
  • Monday 1 April 90% 8 mm 26° / 13° Calm 14 - 45 km/h
  • Tuesday 2 April Sunny intervals with thundershowers and hail 90% 22 mm 19° / Calm 26 - 58 km/h
  • Wednesday 3 April Cloudy skies with thundershowers 70% 0.3 mm 10° / Calm 34 - 71 km/h
  • Thursday 4 April Clear skies 12° / Calm 20 - 45 km/h

Weather Forecast for St. Louis Regional Airport Alton, IL Today

, 29 March

Tomorrow

, 30 March
07:00 Partly cloudy Partly cloudy
Feels Like
Calm South 7 - 15 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 78%
  • Dew Point Dew Point 2 °C
  • Clouds Clouds 64%
  • Feels Like Feels Like 4 °C
  • Visibility Visibility 30 km
  • Wind Wind - Average 7 km/h
  • Pressure Pressure 1018 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 15 km/h
  • Snowline Snowline 2400 m
08:00 Scattered clouds Scattered clouds
Feels Like
Calm South 7 - 12 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 73%
  • Dew Point Dew Point 3 °C
  • Clouds Clouds 31%
  • Feels Like Feels Like 6 °C
  • Visibility Visibility 30 km
  • Wind Wind - Average 7 km/h
  • Pressure Pressure 1018 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 12 km/h
  • Snowline Snowline 2400 m
09:00 Clear 10° Clear
Feels Like 10°
Calm South 7 - 16 km/h
UV Index 1 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 65%
  • Dew Point Dew Point 4 °C
  • Clouds Clouds 0%
  • Feels Like Feels Like 10 °C
  • Visibility Visibility 30 km
  • Wind Wind - Average 7 km/h
  • Pressure Pressure 1018 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 16 km/h
  • Snowline Snowline 2400 m
10:00 Clear 13° Clear
Feels Like 13°
Calm South 9 - 22 km/h
UV Index 2 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 56%
  • Dew Point Dew Point 5 °C
  • Clouds Clouds 10%
  • Feels Like Feels Like 13 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 9 km/h
  • Pressure Pressure 1018 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 22 km/h
  • Snowline Snowline 2500 m
Scattered clouds 11:00 Scattered clouds 16° Scattered clouds
Feels Like 16°
Calm South 12 - 27 km/h
UV Index 3 Moderate SPF: 6-10
Scattered clouds 11:00 Scattered clouds 16° Scattered clouds
Feels Like 16°
Calm South 12 - 27 km/h
UV Index 3 Moderate SPF: 6-10
  • Rain Rain 0% 0 mm
  • Humidity Humidity 51%
  • Dew Point Dew Point 6 °C
  • Clouds Clouds 19%
  • Feels Like Feels Like 16 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 12 km/h
  • Pressure Pressure 1017 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 27 km/h
  • Snowline Snowline 2600 m
12:00 Scattered clouds 19° Scattered clouds
Feels Like 19°
Calm South 16 - 34 km/h
UV Index 4 Moderate SPF: 6-10
  • Rain Rain 0% 0 mm
  • Humidity Humidity 45%
  • Dew Point Dew Point 7 °C
  • Clouds Clouds 30%
  • Feels Like Feels Like 19 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 16 km/h
  • Pressure Pressure 1016 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 34 km/h
  • Snowline Snowline 2800 m
13:00 Scattered clouds 20° Scattered clouds
Feels Like 20°
Calm South 20 - 43 km/h
UV Index 5 Moderate SPF: 6-10
  • Rain Rain 0% 0 mm
  • Humidity Humidity 39%
  • Dew Point Dew Point 6 °C
  • Clouds Clouds 40%
  • Feels Like Feels Like 20 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 20 km/h
  • Pressure Pressure 1015 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 43 km/h
  • Snowline Snowline 2800 m
Scattered clouds 14:00 Scattered clouds 21° Scattered clouds
Feels Like 21°
Calm South 21 - 44 km/h
UV Index 5 Moderate SPF: 6-10
Scattered clouds 14:00 Scattered clouds 21° Scattered clouds
Feels Like 21°
Calm South 21 - 44 km/h
UV Index 5 Moderate SPF: 6-10
  • Rain Rain 0% 0 mm
  • Humidity Humidity 37%
  • Dew Point Dew Point 6 °C
  • Clouds Clouds 48%
  • Feels Like Feels Like 21 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 21 km/h
  • Pressure Pressure 1014 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 44 km/h
  • Snowline Snowline 2800 m
15:00 Scattered clouds 21° Scattered clouds
Feels Like 21°
Calm South 23 - 46 km/h
UV Index 4 Moderate SPF: 6-10
  • Rain Rain 0% 0 mm
  • Humidity Humidity 37%
  • Dew Point Dew Point 6 °C
  • Clouds Clouds 33%
  • Feels Like Feels Like 21 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 23 km/h
  • Pressure Pressure 1012 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 46 km/h
  • Snowline Snowline 2800 m
16:00 Scattered clouds 22° Scattered clouds
Feels Like 22°
Calm South 24 - 47 km/h
UV Index 2 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 36%
  • Dew Point Dew Point 6 °C
  • Clouds Clouds 14%
  • Feels Like Feels Like 22 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 24 km/h
  • Pressure Pressure 1011 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 47 km/h
  • Snowline Snowline 2900 m
Scattered clouds 17:00 Scattered clouds 21° Scattered clouds
Feels Like 21°
Calm South 25 - 49 km/h
UV Index 1 Low SPF: no
Scattered clouds 17:00 Scattered clouds 21° Scattered clouds
Feels Like 21°
Calm South 25 - 49 km/h
UV Index 1 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 37%
  • Dew Point Dew Point 6 °C
  • Clouds Clouds 17%
  • Feels Like Feels Like 21 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 25 km/h
  • Pressure Pressure 1010 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 49 km/h
  • Snowline Snowline 3000 m
18:00 Scattered clouds 20° Scattered clouds
Feels Like 20°
Calm South 22 - 49 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 42%
  • Dew Point Dew Point 7 °C
  • Clouds Clouds 11%
  • Feels Like Feels Like 20 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 22 km/h
  • Pressure Pressure 1009 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 49 km/h
  • Snowline Snowline 3100 m
19:00 Clear 19° Clear
Feels Like 19°
Calm South 21 - 50 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 48%
  • Dew Point Dew Point 7 °C
  • Clouds Clouds 3%
  • Feels Like Feels Like 19 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 21 km/h
  • Pressure Pressure 1010 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 50 km/h
  • Snowline Snowline 3200 m
Scattered clouds 20:00 Scattered clouds 17° Scattered clouds
Feels Like 17°
Calm South 20 - 40 km/h
UV Index 0 Low SPF: no
Scattered clouds 20:00 Scattered clouds 17° Scattered clouds
Feels Like 17°
Calm South 20 - 40 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 53%
  • Dew Point Dew Point 8 °C
  • Clouds Clouds 17%
  • Feels Like Feels Like 17 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 20 km/h
  • Pressure Pressure 1010 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 40 km/h
  • Snowline Snowline 3300 m
21:00 Scattered clouds 17° Scattered clouds
Feels Like 17°
Calm South 21 - 39 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 57%
  • Dew Point Dew Point 8 °C
  • Clouds Clouds 11%
  • Feels Like Feels Like 17 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 21 km/h
  • Pressure Pressure 1010 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 39 km/h
  • Snowline Snowline 3400 m
22:00 Scattered clouds 16° Scattered clouds
Feels Like 16°
Calm South 22 - 41 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 59%
  • Dew Point Dew Point 8 °C
  • Clouds Clouds 36%
  • Feels Like Feels Like 16 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 22 km/h
  • Pressure Pressure 1010 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 41 km/h
  • Snowline Snowline 3400 m
Scattered clouds 23:00 Scattered clouds 16° Scattered clouds
Feels Like 16°
Calm South 22 - 43 km/h
UV Index 0 Low SPF: no
Scattered clouds 23:00 Scattered clouds 16° Partly cloudy
Feels Like 16°
Calm South 22 - 43 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 60%
  • Dew Point Dew Point 8 °C
  • Clouds Clouds 36%
  • Feels Like Feels Like 16 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 22 km/h
  • Pressure Pressure 1009 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 43 km/h
  • Snowline Snowline 3400 m
24:00 Partly cloudy 16° Partly cloudy
Feels Like 16°
Calm South 22 - 43 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 61%
  • Dew Point Dew Point 9 °C
  • Clouds Clouds 61%
  • Feels Like Feels Like 16 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 22 km/h
  • Pressure Pressure 1010 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 43 km/h
  • Snowline Snowline 3300 m

Pollution in St. Louis Regional Airport Alton

Detail
29
Fair O₃ (71 µg/m³)
  • Little health risk.
  • Sensitive people should consider reducing prolonged or intense outdoor activities if they experience symptoms.

Weather graphs

Maximum Minimum Rainfall

Videos

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