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    Alton

    World / United States / Illinois

    38°53'N / 90°11'W / Altitude 148 m / 01:33 2026/09/16, America/Chicago (UTC-5)

    clear sky 28 °C
    Wind speed 7 km/h
     
    Humidity 72 %
    Visibility 16 km
    Clouds 0 %

    Calculated from nearby stations (00:55 2026/09/16)

    Open Radar Map

    1Warning
    moderate temperature

    Weather for the next 24 hours

    02:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:0000:00 tomorrow01:00 tomorrow02:00 tomorrow
    overcast
    25 °C
    0 mm
    10 %
    E
    9 km/h
    		 overcast
    25 °C
    0 mm
    10 %
    E
    7 km/h
    		 overcast
    25 °C
    0 mm
    20 %
    E
    5 km/h
    		 high clouds
    24 °C
    0 mm
    20 %
    N
    11 km/h
    		 high clouds
    24 °C
    0 mm
    20 %
    NE
    12 km/h
    		 high clouds
    24 °C
    0 mm
    10 %
    NE
    11 km/h
    		 high clouds
    24 °C
    0 mm
    10 %
    E
    11 km/h
    		 high clouds
    26 °C
    0 mm
    10 %
    E
    7 km/h
    		 high clouds
    28 °C
    0 mm
    10 %
    SE
    1 km/h
    		 high clouds
    30 °C
    0 mm
    10 %
    W
    3 km/h
    		 clear sky
    33 °C
    0 mm
    10 %
    W
    7 km/h
    		 clear sky
    34 °C
    0 mm
    10 %
    W
    7 km/h
    		 clear sky with few clouds
    35 °C
    0 mm
    20 %
    W
    7 km/h
    		 clear sky with few clouds
    36 °C
    0 mm
    10 %
    W
    9 km/h
    		 partly cloudy
    36 °C
    0 mm
    0 %
    W
    9 km/h
    		 clear sky
    35 °C
    0 mm
    0 %
    N
    13 km/h
    		 partly cloudy
    32 °C
    0 mm
    10 %
    S
    11 km/h
    		 high clouds
    32 °C
    0 mm
    10 %
    S
    9 km/h
    		 high clouds
    30 °C
    0 mm
    10 %
    S
    7 km/h
    		 high clouds
    28 °C
    0 mm
    10 %
    SE
    6 km/h
    		 high clouds
    27 °C
    0 mm
    0 %
    SE
    6 km/h
    		 high clouds
    27 °C
    0 mm
    0 %
    SE
    6 km/h
    		 overcast
    26 °C
    0 mm
    0 %
    E
    5 km/h
    		 high clouds
    26 °C
    0 mm
    0 %
    E
    7 km/h
    		 high clouds
    25 °C
    0 mm
    0 %
    SE
    4 km/h

    Forecast

    01:0004:0007:0010:0013:0016:0019:0022:00
    high clouds
    26 °C
    0 mm
    0 %
    E
    7 km/h
    		 clear sky
    24 °C
    0 mm
    0 %
    NE
    1 km/h
    		 clear sky
    23 °C
    0 mm
    10 %
    E
    3 km/h
    		 clear sky
    33 °C
    0 mm
    10 %
    SW
    17 km/h
    		 partly cloudy
    36 °C
    0 mm
    10 %
    W
    20 km/h
    		 clear sky with few clouds
    37 °C
    0 mm
    10 %
    W
    15 km/h
    		 high clouds
    33 °C
    0 mm
    30 %
    NW
    13 km/h
    		 clear sky
    27 °C
    0 mm
    10 %
    N
    5 km/h

    Meteogram

    242324222219171711881013153637323632232632252225283132
    40
    35
    30
    25
    20
    15
    10
    5
    Wed
    16
    clear sky with few clouds    		Thu
    17
    clear sky with few clouds    		Fri
    18
    partly cloudy    		Sat
    19
    clear sky    		Sun
    20
    mixed with rain showers    		Mon
    21
    overcast    		Tue
    22
    partly cloudy    		Wed
    23
    mixed with rain showers    		Thu
    24
    clear sky with few clouds    		Fri
    25
    clear sky    		Sat
    26
    clear sky    		Sun
    27
    clear sky with few clouds    		Mon
    28
    clear sky with few clouds    		Tue
    29
    clear sky with few clouds

    Air quality (AQI)


    Air quality index (marked as AQI) is developed by Environmental Protection Agency. Values over 300 represents hazardous air quality, between 200-300 very unhealthy, 150-200 unhealthy, 100-150 unhealthy for sensitive groups and below 100 or rather below 50 the air quality is good.

    Sun and Moon

    Heading: Time:
    Phase: Altitude:


    Heading: Time:
    Illumination: Altitude:


    Date rise set rise Illumination


    Phase Time Length