St. Louis Regional Airport Alton, IL Weather

    07:00 Monday
    Sunny
    Clear
    -1° Feels like -4°
    Moderate southwest wind Southwest 12 - 20 km/h
    • Today 12 Jan. Scattered clouds 10° / -2° Moderate southwest wind 14 - 30 km/h
    • Tomorrow 13 Jan. Partly cloudy 15° / 3° Moderate west wind 20 - 39 km/h
    • Wednesday 14 Jan. Partly cloudy 8° / -7° Strong northwest wind 29 - 56 km/h
    • Thursday 15 Jan. Snow with partly cloudy skies 50% 0.2 mm -1° / -8° Moderate northwest wind 16 - 31 km/h
    • Friday 16 Jan. Partly cloudy 5° / -2° Strong west wind 25 - 50 km/h
    • Saturday 17 Jan. Snow with partly cloudy skies 40% 1.1 mm 0° / -12° Moderate northwest wind 22 - 44 km/h
    • Sunday 18 Jan. Partly cloudy 3° / -13° Moderate west wind 19 - 49 km/h

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

    , 12 January

    Tomorrow

    , 13 January
    08:00 Clear -1° Sunny
    Feels Like -4°
    Moderate southwest wind Southwest 12 - 20 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 65%
    • Dew Point Dew Point -6 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like -4 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 12 km/h
    • Pressure Pressure 1028 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 20 km/h
    • Snowline Snowline 7546 ft
    09:00 Clear 2° Sunny
    Feels Like -1°
    Moderate southwest wind Southwest 11 - 22 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 60%
    • Dew Point Dew Point -5 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like -1 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1028 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 22 km/h
    • Snowline Snowline 7546 ft
    10:00 Clear 4° Sunny
    Feels Like 1°
    Moderate southwest wind Southwest 14 - 27 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 51%
    • Dew Point Dew Point -6 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 1 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 14 km/h
    • Pressure Pressure 1028 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 27 km/h
    • Snowline Snowline 7546 ft
    11:00 Clear 5° Sunny
    Feels Like 3°
    Moderate southwest wind Southwest 14 - 29 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 47%
    • Dew Point Dew Point -5 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 3 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 14 km/h
    • Pressure Pressure 1026 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 29 km/h
    • Snowline Snowline 7874 ft
    12:00 Clear 7° Sunny
    Feels Like 5°
    Moderate southwest wind Southwest 14 - 30 km/h
    		UV Index 2 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 46%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 5 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 14 km/h
    • Pressure Pressure 1025 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 30 km/h
    • Snowline Snowline 8202 ft
    13:00 Clear 8° Sunny
    Feels Like 7°
    Moderate southwest wind Southwest 12 - 29 km/h
    		UV Index 2 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 45%
    • Dew Point Dew Point -3 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 12 km/h
    • Pressure Pressure 1024 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 29 km/h
    • Snowline Snowline 8202 ft
    Sunny 14:00 Clear 9° Sunny
    Feels Like 8°
    Moderate southwest wind Southwest 11 - 26 km/h
    		UV Index 1 Low SPF: no
    14:00 Clear 9° Sunny
    Feels Like 8°
    Moderate southwest wind Southwest 11 - 26 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 45%
    • Dew Point Dew Point -2 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 8 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1023 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 26 km/h
    • Snowline Snowline 8202 ft
    15:00 Clear 10° Sunny
    Feels Like 8°
    Moderate southwest wind Southwest 10 - 24 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 45%
    • Dew Point Dew Point -2 °C
    • Clouds Clouds 1%
    • Feels Like Feels Like 8 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1023 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 24 km/h
    • Snowline Snowline 8530 ft
    16:00 Scattered clouds 9° Scattered clouds
    Feels Like 8°
    Moderate southwest wind Southwest 7 - 21 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 53%
    • Dew Point Dew Point 0 °C
    • Clouds Clouds 39%
    • Feels Like Feels Like 8 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 7 km/h
    • Pressure Pressure 1022 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 21 km/h
    • Snowline Snowline 8202 ft
    Scattered clouds 17:00 Scattered clouds 5° Scattered clouds
    Feels Like 4°
    Gentle southwest wind Southwest 8 - 13 km/h
    		UV Index 0 Low SPF: no
    17:00 Scattered clouds 5° Scattered clouds
    Feels Like 4°
    Gentle southwest wind Southwest 8 - 13 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 66%
    • Dew Point Dew Point -1 °C
    • Clouds Clouds 49%
    • Feels Like Feels Like 4 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1022 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 13 km/h
    • Snowline Snowline 7874 ft
    18:00 Scattered clouds 5° Scattered clouds
    Feels Like 3°
    Gentle southwest wind Southwest 8 - 12 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 68%
    • Dew Point Dew Point 0 °C
    • Clouds Clouds 51%
    • Feels Like Feels Like 3 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1022 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 12 km/h
    • Snowline Snowline 7874 ft
    19:00 Partly cloudy 5° Partly cloudy
    Feels Like 3°
    Gentle southwest wind Southwest 8 - 13 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 70%
    • Dew Point Dew Point 0 °C
    • Clouds Clouds 92%
    • Feels Like Feels Like 3 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 13 km/h
    • Snowline Snowline 7874 ft
    Clear 20:00 Clear skies 5° Clear
    Feels Like 3°
    Gentle southwest wind Southwest 9 - 14 km/h
    		UV Index 0 Low SPF: no
    20:00 Partly cloudy 5° Partly cloudy
    Feels Like 3°
    Gentle southwest wind Southwest 9 - 14 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 71%
    • Dew Point Dew Point 0 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 3 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 14 km/h
    • Snowline Snowline 7874 ft
    21:00 Clear skies 4° Clear
    Feels Like 2°
    Gentle southwest wind Southwest 9 - 15 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 75%
    • Dew Point Dew Point 0 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 2 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 15 km/h
    • Snowline Snowline 8202 ft
    22:00 Clear skies 4° Clear
    Feels Like 1°
    Gentle southwest wind Southwest 9 - 16 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 76%
    • Dew Point Dew Point 0 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 1 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 16 km/h
    • Snowline Snowline 8202 ft
    Clear 23:00 Clear skies 4° Clear
    Feels Like 1°
    Gentle southwest wind Southwest 10 - 17 km/h
    		UV Index 0 Low SPF: no
    23:00 Clear skies 4° Clear
    Feels Like 1°
    Gentle southwest wind Southwest 10 - 17 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 77%
    • Dew Point Dew Point 0 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 1 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 17 km/h
    • Snowline Snowline 8202 ft
    24:00 Clear skies 3° Clear
    Feels Like 1°
    Gentle southwest wind Southwest 10 - 17 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 79%
    • Dew Point Dew Point 0 °C
    • Clouds Clouds 8%
    • Feels Like Feels Like 1 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 17 km/h
    • Snowline Snowline 8202 ft

    Sunrise and Sunset

    Sunrise 07:18 Sunset 16:59
    First light 06:48 Midday 12:08 Last light 17:28
    Day length 9h 41m

    Remaining daylight 9h 22m

    Lunar calendar

    Mon Tue Wed Thu Fri Sat Sun
    12 Last Quarter
    13 Last Quarter
    14 Last Quarter
    15 Last Quarter
    16 Last Quarter
    17 New Moon
    18 New Moon
    19 New Moon
    20 First Quarter
    21 First Quarter
    22 First Quarter
    23 First Quarter
    24 First Quarter
    25 First Quarter

    Air quality in St. Louis Regional Airport Alton today

    Detail
    23
    Fair O₃ (57 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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