Weather in Alton, United States
Weather Advisories
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Today's weather summary
The weather in Alton on Friday, July 24th, is going to be mostly clear for most of the day, together with clear skies before dawn.
There's seems to be also high probability of cloud overcast before dawn at about 1 am.
Weather information for Alton, on Friday, July 24th:
The maximum temperature during the day will be 30°C at about 4 pm. The day will have comfortable humidity, with average humidity of 51%, ranging from 27% to a maximum value of 76% at about 7 am. The wind will be breezy, and will get up to 24 km/h at 5 pm, blowing from the west. The cloud coverage will range from 0% around 9 am to as high as 100% around 5 pm with an average of 35%.
There is no probability for any precipitation throughout the day. The dew point will range from 7°C up to a maximum value of 12°C around midnight.
The visibility is expected to be good with average visibility of 16 km throughout the day. Atmospheric pressure will be normal with average pressure of 1010 hPa. Sunrise will be at 6:27 am, and sunset at 8:44 pm. The day will have 14 hours and 17 minutes of daylight.
Air quality forecast for Alton, on Friday, July 24th:
On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 35 and 53.
Pollen forecast for Alton, on Friday, July 24th:
Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have medium risk.
The weather in Alton on Saturday, July 25th, will vary throughout the day from cloudy weather to clear.
Looks like cloud overcast will emerge in the early morning and there is a high chance for clear skies before dawn.
Weather details for Alton, on Saturday, July 25th:
The highest temperature of the day is going to be 32°C around 5 pm. The day will be dry, with average humidity of 32%, ranging from 19% to a maximum value of 51% at about 1 am. The wind will be strong, and will get up to 32 km/h at 3 pm, blowing from the west. The cloud coverage will range from 0% around midnight to as high as 100% around 4 pm with an average of 47%.
There is no probability for any precipitation throughout the day. The dew point will range from 1°C up to a maximum value of 10°C around midnight.
The visibility is expected to be good with average visibility of 16 km throughout the day. Atmospheric pressure will be low with average pressure of 1009 hPa. Sunrise will be at 6:28 am, and sunset at 8:44 pm. The day will have 14 hours and 16 minutes of daylight.
Air quality forecast for Alton, on Saturday, July 25th:
On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 31 and 45.
Pollen forecast for Alton, on Saturday, July 25th:
Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have medium risk.
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