St. Louis Regional Airport Alton, IL Weather

    06:00 Friday
    Sunny
    Clear
    18° Feels like 18°
    Gentle north wind North 6 - 9 km/h
    reloj Hourly Cloudy intervals for the next few hours
    • Today 28 Aug. Clear 31° / 18° Moderate northwest wind 12 - 28 km/h
    • Tomorrow 29 Aug. Scattered clouds 32° / 18° Moderate south wind 11 - 23 km/h
    • Sunday 30 Aug. Scattered clouds 35° / 21° Moderate south wind 16 - 34 km/h
    • Monday 31 Aug. Scattered clouds 37° / 23° Moderate southeast wind 14 - 26 km/h
    • Tuesday 1 Sept. Clear 38° / 25° Moderate south wind 17 - 31 km/h
    • Wednesday 2 Sept. Clear 38° / 26° Moderate south wind 14 - 31 km/h
    • Thursday 3 Sept. Scattered clouds 38° / 27° Moderate south wind 15 - 37 km/h

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

    , 28 August

    Tomorrow

    , 29 August
    06:00 Clear 18° Sunny
    Feels Like 18°
    Gentle north wind North 6 - 9 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 87%
    • Dew Point Dew Point 16 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 18 °C
    • Visibility Visibility 20 km
    • Wind Wind - Average 6 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 9 km/h
    • Snowline Snowline 14436 ft
    07:00 Clear 19° Sunny
    Feels Like 19°
    Gentle north wind North 6 - 11 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 85%
    • Dew Point Dew Point 16 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 19 °C
    • Visibility Visibility 20 km
    • Wind Wind - Average 6 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 11 km/h
    • Snowline Snowline 14436 ft
    08:00 Clear 21° Sunny
    Feels Like 21°
    Gentle north wind North 6 - 13 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 77%
    • Dew Point Dew Point 17 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 21 °C
    • Visibility Visibility 25 km
    • Wind Wind - Average 6 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 13 km/h
    • Snowline Snowline 14436 ft
    09:00 Clear 24° Sunny
    Feels Like 25°
    Gentle north wind North 5 - 14 km/h
    		UV Index 2 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 68%
    • Dew Point Dew Point 17 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 25 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 14 km/h
    • Snowline Snowline 14764 ft
    10:00 Clear 26° Sunny
    Feels Like 27°
    Gentle north wind North 4 - 15 km/h
    		UV Index 3 Moderate SPF: 6-10
    • Rain Rain 0% 0 mm
    • Humidity Humidity 56%
    • Dew Point Dew Point 17 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 27 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 15 km/h
    • Snowline Snowline 14764 ft
    Sunny 11:00 Clear 27° Sunny
    Feels Like 28°
    Gentle north wind North 5 - 16 km/h
    		UV Index 5 Moderate SPF: 6-10
    11:00 Scattered clouds 27° Scattered clouds
    Feels Like 28°
    Gentle north wind North 5 - 16 km/h
    		UV Index 5 Moderate SPF: 6-10
    • Rain Rain 0% 0 mm
    • Humidity Humidity 48%
    • Dew Point Dew Point 16 °C
    • Clouds Clouds 2%
    • Feels Like Feels Like 28 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 16 km/h
    • Snowline Snowline 14764 ft
    12:00 Scattered clouds 29° Scattered clouds
    Feels Like 28°
    Moderate north wind North 7 - 20 km/h
    		UV Index 7 High SPF: 15-25
    • Rain Rain 0% 0 mm
    • Humidity Humidity 43%
    • Dew Point Dew Point 15 °C
    • Clouds Clouds 19%
    • Feels Like Feels Like 28 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 7 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 20 km/h
    • Snowline Snowline 15092 ft
    13:00 Scattered clouds 29° Scattered clouds
    Feels Like 29°
    Moderate northwest wind Northwest 10 - 24 km/h
    		UV Index 7 High SPF: 15-25
    • Rain Rain 0% 0 mm
    • Humidity Humidity 40%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 33%
    • Feels Like Feels Like 29 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 24 km/h
    • Snowline Snowline 15092 ft
    Scattered clouds 14:00 Scattered clouds 30° Scattered clouds
    Feels Like 29°
    Moderate northwest wind Northwest 12 - 27 km/h
    		UV Index 7 High SPF: 15-25
    14:00 Scattered clouds 30° Scattered clouds
    Feels Like 29°
    Moderate northwest wind Northwest 12 - 27 km/h
    		UV Index 7 High SPF: 15-25
    • Rain Rain 0% 0 mm
    • Humidity Humidity 39%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 18%
    • Feels Like Feels Like 29 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 12 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 27 km/h
    • Snowline Snowline 15092 ft
    15:00 Scattered clouds 30° Scattered clouds
    Feels Like 29°
    Moderate north wind North 11 - 28 km/h
    		UV Index 5 Moderate SPF: 6-10
    • Rain Rain 0% 0 mm
    • Humidity Humidity 38%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 17%
    • Feels Like Feels Like 29 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 28 km/h
    • Snowline Snowline 15420 ft
    16:00 Scattered clouds 30° Scattered clouds
    Feels Like 29°
    Moderate north wind North 10 - 26 km/h
    		UV Index 3 Moderate SPF: 6-10
    • Rain Rain 0% 0 mm
    • Humidity Humidity 36%
    • Dew Point Dew Point 13 °C
    • Clouds Clouds 20%
    • Feels Like Feels Like 29 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1018 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 26 km/h
    • Snowline Snowline 15420 ft
    Scattered clouds 17:00 Scattered clouds 30° Scattered clouds
    Feels Like 29°
    Moderate north wind North 10 - 24 km/h
    		UV Index 2 Low SPF: no
    17:00 Scattered clouds 30° Scattered clouds
    Feels Like 29°
    Moderate north wind North 10 - 24 km/h
    		UV Index 2 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 35%
    • Dew Point Dew Point 13 °C
    • Clouds Clouds 14%
    • Feels Like Feels Like 29 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1018 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 24 km/h
    • Snowline Snowline 15420 ft
    18:00 Scattered clouds 29° Scattered clouds
    Feels Like 28°
    Moderate north wind North 9 - 21 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 37%
    • Dew Point Dew Point 13 °C
    • Clouds Clouds 13%
    • Feels Like Feels Like 28 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1018 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 21 km/h
    • Snowline Snowline 15420 ft
    19:00 Clear 27° Sunny
    Feels Like 27°
    Gentle north wind North 5 - 19 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 43%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 9%
    • Feels Like Feels Like 27 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1018 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 19 km/h
    • Snowline Snowline 15420 ft
    Sunny 20:00 Clear 26° Sunny
    Feels Like 26°
    Gentle northeast wind Northeast 5 - 11 km/h
    		UV Index 0 Low SPF: no
    20:00 Clear 26° Sunny
    Feels Like 26°
    Gentle northeast wind Northeast 5 - 11 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 46%
    • Dew Point Dew Point 13 °C
    • Clouds Clouds 6%
    • Feels Like Feels Like 26 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1018 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 11 km/h
    • Snowline Snowline 15420 ft
    21:00 Clear skies 25° Clear
    Feels Like 26°
    Gentle east wind East 5 - 9 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 49%
    • Dew Point Dew Point 13 °C
    • Clouds Clouds 2%
    • Feels Like Feels Like 26 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 9 km/h
    • Snowline Snowline 15748 ft
    22:00 Clear skies 24° Clear
    Feels Like 25°
    Gentle east wind East 4 - 8 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 56%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 25 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 8 km/h
    • Snowline Snowline 15748 ft
    Clear 23:00 Clear skies 23° Clear
    Feels Like 25°
    Gentle east wind East 4 - 7 km/h
    		UV Index 0 Low SPF: no
    23:00 Clear skies 23° Clear
    Feels Like 25°
    Gentle east wind East 4 - 7 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 61%
    • Dew Point Dew Point 15 °C
    • Clouds Clouds 1%
    • Feels Like Feels Like 25 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 7 km/h
    • Snowline Snowline 15748 ft
    24:00 Clear skies 22° Clear
    Feels Like 22°
    Gentle east wind East 5 - 7 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 65%
    • Dew Point Dew Point 15 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 22 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 7 km/h
    • Snowline Snowline 15748 ft

    Air quality in St. Louis Regional Airport Alton today

    Detail
    44
    Moderate O₃ (111 µg/m³)

    Sunrise and Sunset

    Sunrise 06:25 Sunset 19:36
    First light 05:58 Midday 13:01 Last light 20:03
    Day length 13h 11m

    Remaining daylight 13h 7m

    Lunar calendar

    Mon Tue Wed Thu Fri Sat Sun
    28 Full Moon
    29 Full Moon
    30 Last Quarter
    31 Last Quarter
    1 Last Quarter
    2 Last Quarter
    3 Last Quarter
    4 Last Quarter
    5 Last Quarter
    6 Last Quarter
    7 Last Quarter
    8 Last Quarter
    9 New Moon
    10 New Moon

    What is the weather like in St. Louis Regional Airport Alton, IL in August?

    • Avg. Temp.
      Avg. Temp.: 25 °C Max.: 30 °C Min: 20 °C
    • Rainy Days
      Rainy Days: 9 days
    • Accumulated Rainfall
      Accumulated Rainfall: 78 mm
    • Average Wind Speed
      Average Wind Speed: 9 km/h

    Weather graphs

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