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 cloudy throughout the day, with clear skies during the evening.
There is also a chance for light rain before dawn at about 1 am, and few clouds during the evening at about 8 pm.
Weather details for Alton, on Friday, July 24th:
The maximum temperature during the day will be 27°C around 6 pm. The day will be extremely humid, with average humidity of 81%, ranging from 60% to a maximum value of 96% at about 7 am. The wind will be breezy, and will get up to 18 km/h at 10 am, blowing from the south. The cloud coverage will range from 0% around 11 pm to as high as 100% around 6 pm with an average of 75%.
The precipitation probability will change throughout the day between 0% and 55%. The highest chance for precipitation will be around 3 am and the lowest probability around 4 am. The dew point will range from 17°C up to a maximum value of 19°C around 11 pm.
The visibility is expected to be good with average visibility of 14 km throughout the day. Atmospheric pressure will be normal with average pressure of 1015 hPa. Sunrise will be at 6:06 am, and sunset at 8:54 pm, making it a total of 14 hours and 48 minutes of daylight.
Air quality forecast for Alton, on Friday, July 24th:
On average, the air quality on this day will be moderate, meaning that air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. According to our index, ranging from 0 to 500, the air quality is going to be between values of 36 and 62.
Pollen forecast for Alton, on Friday, July 24th:
The overall pollen forecast for this day shows no significant pollen. 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 no risk.
The weather in Alton on Saturday, July 25th, will be clear throughout the day, together with cloud overcast during the evening.
There is also a chance for few clouds in the early morning at about 6 am.
Weather details for Alton, on Saturday, July 25th:
The highest temperature of the day will be 37°C around 6 pm. The day will be humid, with average humidity of 69%, ranging from 37% to a maximum value of 96% at about 7 am. The wind will be breezy, and will get up to 19 km/h at 8 am, blowing from the south-west. The cloud coverage will range from 0% around 4 pm to as high as 100% around 10 pm with an average of 24%.
There is no probability for any precipitation throughout the day. The dew point will range from 19°C up to a maximum value of 23°C around 9 pm.
The visibility is expected to be good with average visibility of 15 km throughout the day. Atmospheric pressure will be normal with average pressure of 1010 hPa. Sunrise will be at 6:07 am, and sunset at 8:53 pm. The day will have 14 hours and 46 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 22 and 54.
Pollen forecast for Alton, on Saturday, July 25th:
The overall pollen forecast for this day shows no significant pollen. 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 no risk.
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