St. Louis Regional Airport Alton, IL Weather

    09:00 Monday
    Partly cloudy
    Partly cloudy
    3° Feels like -1°
    Moderate southeast wind Southeast 17 - 27 km/h
    • Today 22 Dec. Scattered clouds 9° / -1° Moderate southeast wind 17 - 28 km/h
    • Tomorrow 23 Dec. Clear 16° / 4° Moderate southwest wind 12 - 22 km/h
    • Wednesday 24 Dec. Light rain with partly cloudy skies 30% 0.1 mm 16° / 4° Moderate southeast wind 14 - 28 km/h
    • Thursday 25 Dec. Light rain with partly cloudy skies 30% 0.2 mm 18° / 10° Moderate south wind 17 - 30 km/h
    • Friday 26 Dec. Light rain with partly cloudy skies 30% 0.2 mm 22° / 9° Moderate southwest wind 20 - 41 km/h
    • Saturday 27 Dec. Partly cloudy 21° / 6° Moderate south wind 18 - 34 km/h
    • Sunday 28 Dec. Scattered clouds 18° / -5° Strong northwest wind 28 - 62 km/h

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

    , 22 December

    Tomorrow

    , 23 December
    09:00 Partly cloudy 3° Partly cloudy
    Feels Like -1°
    Moderate southeast wind Southeast 17 - 27 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 57%
    • Dew Point Dew Point -5 °C
    • Clouds Clouds 77%
    • Feels Like Feels Like -1 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 17 km/h
    • Pressure Pressure 1027 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 27 km/h
    • Snowline Snowline 12139 ft
    10:00 Partly cloudy 5° Partly cloudy
    Feels Like 2°
    Moderate southeast wind Southeast 13 - 28 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 51%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 59%
    • Feels Like Feels Like 2 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 13 km/h
    • Pressure Pressure 1026 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 28 km/h
    • Snowline Snowline 12139 ft
    11:00 Overcast 7° Overcast
    Feels Like 4°
    Moderate southeast wind Southeast 13 - 26 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 48%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 100%
    • Feels Like Feels Like 4 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 13 km/h
    • Pressure Pressure 1025 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 26 km/h
    • Snowline Snowline 12139 ft
    12:00 Partly cloudy 7° Partly cloudy
    Feels Like 5°
    Moderate southeast wind Southeast 8 - 26 km/h
    		UV Index 2 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 52%
    • Dew Point Dew Point -2 °C
    • Clouds Clouds 70%
    • Feels Like Feels Like 5 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1023 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 26 km/h
    • Snowline Snowline 12467 ft
    13:00 Overcast 8° Overcast
    Feels Like 7°
    Gentle southeast wind Southeast 9 - 19 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 49%
    • Dew Point Dew Point -2 °C
    • Clouds Clouds 100%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1022 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 19 km/h
    • Snowline Snowline 12795 ft
    Overcast 14:00 Overcast 8° Overcast
    Feels Like 7°
    Moderate southeast wind Southeast 9 - 20 km/h
    		UV Index 0 Low SPF: no
    14:00 Overcast 8° Overcast
    Feels Like 7°
    Moderate southeast wind Southeast 9 - 20 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 53%
    • Dew Point Dew Point -1 °C
    • Clouds Clouds 100%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 20 km/h
    • Snowline Snowline 13123 ft
    15:00 Overcast 8° Overcast
    Feels Like 7°
    Moderate southeast wind Southeast 12 - 20 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 55%
    • Dew Point Dew Point 0 °C
    • Clouds Clouds 100%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 12 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 20 km/h
    • Snowline Snowline 13123 ft
    16:00 Partly cloudy 9° Partly cloudy
    Feels Like 7°
    Moderate southeast wind Southeast 12 - 21 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 59%
    • Dew Point Dew Point 1 °C
    • Clouds Clouds 81%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 12 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 21 km/h
    • Snowline Snowline 13123 ft
    Partly cloudy 17:00 Partly cloudy 8° Partly cloudy
    Feels Like 6°
    Moderate southeast wind Southeast 11 - 21 km/h
    		UV Index 0 Low SPF: no
    17:00 Partly cloudy 8° Partly cloudy
    Feels Like 6°
    Moderate southeast wind Southeast 11 - 21 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 68%
    • Dew Point Dew Point 2 °C
    • Clouds Clouds 75%
    • Feels Like Feels Like 6 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 21 km/h
    • Snowline Snowline 13123 ft
    18:00 Scattered clouds 8° Scattered clouds
    Feels Like 6°
    Moderate south wind South 11 - 20 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 70%
    • Dew Point Dew Point 3 °C
    • Clouds Clouds 10%
    • Feels Like Feels Like 6 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 20 km/h
    • Snowline Snowline 13123 ft
    19:00 Partly cloudy 7° Partly cloudy
    Feels Like 5°
    Moderate south wind South 12 - 20 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 80%
    • Dew Point Dew Point 4 °C
    • Clouds Clouds 61%
    • Feels Like Feels Like 5 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 12 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 20 km/h
    • Snowline Snowline 13451 ft
    Clear 20:00 Clear skies 8° Clear
    Feels Like 6°
    Moderate south wind South 14 - 24 km/h
    		UV Index 0 Low SPF: no
    20:00 Partly cloudy 8° Partly cloudy
    Feels Like 6°
    Moderate south wind South 14 - 24 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 82%
    • Dew Point Dew Point 5 °C
    • Clouds Clouds 5%
    • Feels Like Feels Like 6 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 14 km/h
    • Pressure Pressure 1018 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 24 km/h
    • Snowline Snowline 13123 ft
    21:00 Clear skies 7° Clear
    Feels Like 5°
    Moderate south wind South 13 - 25 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 88%
    • Dew Point Dew Point 5 °C
    • Clouds Clouds 9%
    • Feels Like Feels Like 5 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 13 km/h
    • Pressure Pressure 1018 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 25 km/h
    • Snowline Snowline 13123 ft
    22:00 Scattered clouds 7° Scattered clouds
    Feels Like 5°
    Moderate south wind South 13 - 23 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 90%
    • Dew Point Dew Point 6 °C
    • Clouds Clouds 11%
    • Feels Like Feels Like 5 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 13 km/h
    • Pressure Pressure 1018 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 23 km/h
    • Snowline Snowline 13123 ft
    Clear 23:00 Clear skies 7° Clear
    Feels Like 5°
    Moderate south wind South 13 - 22 km/h
    		UV Index 0 Low SPF: no
    23:00 Scattered clouds 7° Scattered clouds
    Feels Like 5°
    Moderate south wind South 13 - 22 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 92%
    • Dew Point Dew Point 6 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 5 °C
    • Visibility Visibility 25 km
    • Wind Wind - Average 13 km/h
    • Pressure Pressure 1018 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 22 km/h
    • Snowline Snowline 13123 ft
    24:00 Clear skies 7° Clear
    Feels Like 5°
    Moderate southwest wind Southwest 13 - 22 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 94%
    • Dew Point Dew Point 6 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 5 °C
    • Visibility Visibility 25 km
    • Wind Wind - Average 13 km/h
    • Pressure Pressure 1018 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 22 km/h
    • Snowline Snowline 13123 ft

    Sunrise and Sunset

    Sunrise 07:15 Sunset 16:42
    First light 06:45 Midday 11:59 Last light 17:12
    Day length 9h 26m

    Remaining daylight 7h 16m

    Lunar calendar

    Mon Tue Wed Thu Fri Sat Sun
    22 First Quarter
    23 First Quarter
    24 First Quarter
    25 First Quarter
    26 First Quarter
    27 First Quarter
    28 First Quarter
    29 First Quarter
    30 First Quarter
    31 First Quarter
    1 First Quarter
    2 Full Moon
    3 Full Moon
    4 Full Moon

    Air quality in St. Louis Regional Airport Alton today

    Detail
    30
    Fair SO₂ (14 µg/m³)
    • Little health risk.
    • Sensitive people should consider reducing prolonged or intense outdoor activities if they experience symptoms.

    Weather graphs
    Maximum Minimum Rainfall

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