TODAY AUG17
TEMPERATURE81
HUMIDITY79
PRESSURE29.9
WIND COND.190 6.9
  • 8466Fri30%20%
  • 8565Sat
  • 8768Sun
  • 8164Mon50%50%
  • 7960Tue20%20%
daynightWeather update from St. Charles, St. Charles County Smartt Airport at

Jerseyville Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January26°F41°F33°F9.0"
February25°F43°F33°F4.8"
March36°F60°F47°F3.9"
April44°F68°F55°F4.3"
May56°F80°F67°F4.3"
June65°F87°F76°F5.8"
July66°F89°F77°F3.9"
August69°F91°F79°F4.6"
September60°F85°F71°F4.9"
October48°F71°F59°F3.7"
November36°F58°F46°F7.6"
December25°F40°F32°F2.5"

Did you know?

  • The highest monthly average temperature in Jerseyville for August is 79 degrees.
  • The lowest monthly average temperature in Jerseyville for December is 32 degrees.
  • The most monthly precipitation in Jerseyville occurs in January with 9 inches.
  • The air quality index in Jerseyville is 20% worse than the national average.
  • The pollution index in Jerseyville is 75% worse than the national average.

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Compare Jerseyville, IL Weather To Other Cities

Jerseyville air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexJerseyvilleIllinoisNational
Air quality index604150
Pollution index8,870,2303,347,2955,066,862

Jerseyville air quality information

MeasurementTotal
Days measured365
Days with good air quality99
Days with moderate air quality231
Days w/ poor A.Q. for sensitive groups33
Days with unhealthy air quality2

Jerseyville air quality information

PollutantTotal
Arsenic0.180%
Benzene0.060%
Carbon Tetrachloride0.020%
Lead0.030%
Mercury0.120%

Average monthly Jerseyville temperature with heat index

Jerseyville monthly precipitation with daily maximum

Jerseyville monthly snow depth with daily maximum

Jerseyville monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Chesterfield, IL3363530%
Brighton, IL2,3166020%
Eldred, IL1656020%
Godfrey, IL17,8096020%
Otterville, IL896020%
Jerseyville, IL8,5026020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Itasca, IL8,5026020%
Palm Beach, FL8,5012942%
Live Oak city, CA8,5013628%
Signal Mountain, TN8,5004412%
Winchester, TN8,5043726%
Jerseyville, IL8,5026020%
Source: The Jerseyville, IL weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.