St. Louis Regional Airport Alton, IL - Extended Weather Forecast

    22:00 Friday
    Overcast
    Overcast
    0° Feels like -3°
    Full Moon Full Moon Illuminated: 99%
    • Friday 12 Dec. Snow with partly cloudy skies 30% 3.4 mm 1° / -5° Moderate north wind 21 - 40 km/h
    • Saturday 13 Dec. Partly cloudy 5° / -5° Moderate south wind 21 - 42 km/h
    • Sunday 14 Dec. Scattered clouds 4° / -17° Moderate northwest wind 22 - 46 km/h
    • Monday 15 Dec. Clear -10° / -19° Moderate southeast wind 13 - 31 km/h
    • Tuesday 16 Dec. Partly cloudy 3° / -11° Moderate south wind 19 - 36 km/h
    • Wednesday 17 Dec. Scattered clouds 10° / 0° Moderate south wind 17 - 36 km/h
    • Thursday 18 Dec. Partly cloudy 17° / 5° Moderate south wind 26 - 49 km/h
    Friday, 12 December
    Saturday, 13 December
    03:00 Snow with cloudy skies 30% 0.59 in 0° Snow
    Feels Like -5°
    Moderate northeast wind Northeast 17 - 35 km/h
    		UV Index 0 Low SPF: no
    • Snow Snow 30% 0.59 in
    • Humidity Humidity 95%
    • Dew Point Dew Point -1 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 1.57 in
    • Feels Like Feels Like -5 °C
    • Wind Wind - Average 17 km/h
    • Pressure Pressure 1010 hPa
    • Snowline Snowline 2297 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 35 km/h
    • Visibility Visibility 8 km
    06:00 Snow with cloudy skies 30% 0.51 in -1° Snow
    Feels Like -6°
    Moderate north wind North 20 - 40 km/h
    		UV Index 0 Low SPF: no
    • Snow Snow 30% 0.51 in
    • Humidity Humidity 92%
    • Dew Point Dew Point -2 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 1.97 in
    • Feels Like Feels Like -6 °C
    • Wind Wind - Average 20 km/h
    • Pressure Pressure 1014 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 40 km/h
    • Visibility Visibility 12 km
    09:00 Snow with partly cloudy skies 30% 0.24 in -1° Snow
    Feels Like -6°
    Moderate north wind North 21 - 39 km/h
    		UV Index 1 Low SPF: no
    • Snow Snow 30% 0.24 in
    • Humidity Humidity 86%
    • Dew Point Dew Point -3 °C
    • Clouds Clouds 62%
    • Snow depth Snow depth 1.97 in
    • Feels Like Feels Like -6 °C
    • Wind Wind - Average 21 km/h
    • Pressure Pressure 1019 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 39 km/h
    • Visibility Visibility 25 km
    12:00 Scattered clouds -1° Scattered clouds
    Feels Like -6°
    Moderate north wind North 18 - 37 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 10% 0 mm
    • Humidity Humidity 81%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 35%
    • Snow depth Snow depth 1.97 in
    • Feels Like Feels Like -6 °C
    • Wind Wind - Average 18 km/h
    • Pressure Pressure 1023 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 37 km/h
    • Visibility Visibility 40 km
    15:00 Partly cloudy -1° Partly cloudy
    Feels Like -6°
    Moderate north wind North 14 - 37 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 10% 0 mm
    • Humidity Humidity 84%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 67%
    • Snow depth Snow depth 1.97 in
    • Feels Like Feels Like -6 °C
    • Wind Wind - Average 14 km/h
    • Pressure Pressure 1025 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 37 km/h
    • Visibility Visibility 30 km
    18:00 Overcast -2° Overcast
    Feels Like -5°
    Moderate northwest wind Northwest 11 - 36 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 90%
    • Dew Point Dew Point -3 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 1.57 in
    • Feels Like Feels Like -5 °C
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1027 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 36 km/h
    • Visibility Visibility 20 km
    21:00 Overcast -3° Overcast
    Feels Like -5°
    Moderate northwest wind Northwest 6 - 27 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 93%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 1.57 in
    • Feels Like Feels Like -5 °C
    • Wind Wind - Average 6 km/h
    • Pressure Pressure 1027 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 27 km/h
    • Visibility Visibility 20 km
    24:00 Overcast -4° Overcast
    Feels Like 1°
    Gentle west wind West 0 - 19 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 93%
    • Dew Point Dew Point -5 °C
    • Clouds Clouds 99%
    • Snow depth Snow depth 1.57 in
    • Feels Like Feels Like 1 °C
    • Wind Wind - Average 0 km/h
    • Pressure Pressure 1027 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 19 km/h
    • Visibility Visibility 20 km

    Sunrise and Sunset

    Sunrise 07:03 Sunset 16:37
    First light 06:34 Midday 11:51 Last light 17:07
    Day length 9h 34m

    Lunar calendar

    Mon Tue Wed Thu Fri Sat Sun
    5 Full Moon
    6 Last Quarter
    7 Last Quarter
    8 Last Quarter
    9 Last Quarter
    10 Last Quarter
    11 Last Quarter
    12 Last Quarter
    13 Last Quarter
    14 Last Quarter
    15 Last Quarter
    16 Last Quarter
    17 Last Quarter
    18 New Moon

    Air quality in St. Louis Regional Airport Alton today

    Detail
    32
    Fair PM₂₅ (18 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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