Weather in Alton, United States
Weather Advisories
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Tomorrow's weather summary
The weather in Alton on Wednesday, January 8th, according to our forecast model, will be clear throughout the entire day with no significant change.
Weather information for Alton, on Wednesday, January 8th:
The highest temperature of the day will be 23°F at about 2 pm. The day will have high relative humidity, with average humidity of 65%, ranging from 38% to a maximum value of 84% at about 5 am. The wind will be light, and will get up to 7 mph at 1 am, blowing from the north-west. The sky will be clear of clouds along the day.
There is no probability for any precipitation throughout the day. The dew point will range from 2°F up to a maximum value of 9°F around 3 am.
The visibility is expected to be good with average visibility of 10 mi throughout the day. Atmospheric pressure will be very high with average pressure of 1035 hPa. Sunrise will be at 7:20 am, and sunset at 5:23 pm. The day will have 10 hours and 3 minutes of daylight.
Air quality forecast for Alton, on Wednesday, January 8th:
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 30 and 42.
Pollen forecast for Alton, on Wednesday, January 8th:
The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have very low risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.
The weather in Alton on Thursday, January 9th, is going to be mostly clear for most of the day, with clear skies before dawn.
There is also a chance for many clouds around noon around 1 pm.
Weather details for Alton, on Thursday, January 9th:
The maximum temperature of the day is going to be 30°F at about 3 pm. The day will have very high relative humidity, with average humidity of 76%, ranging from 65% to a maximum value of 96% at about 11 pm. The wind will be calm, and will get up to 5 mph at 10 am, blowing from the south. The cloud coverage will range from 0% around midnight to as high as 100% around 11 pm with an average of 46%.
The precipitation probability will change throughout the day between 0% and 20%. The highest chance for precipitation will be around 11 pm and the lowest probability around midnight. The dew point will range from 6°F up to a maximum value of 25°F around 11 pm.
The visibility is expected to be good with average visibility of 12 mi throughout the day. Atmospheric pressure will be very high with average pressure of 1028 hPa. Sunrise will be at 7:20 am, and sunset at 5:24 pm. The day will have 10 hours and 4 minutes of daylight.
Air quality forecast for Alton, on Thursday, January 9th:
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 34 and 46.
Pollen forecast for Alton, on Thursday, January 9th:
The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have very low risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.
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