TODAY JUN25
TEMPERATURE73
HUMIDITY90
PRESSURE30.04
WIND COND.170 5.8
  • 8773Tue60%40%
  • 9072Wed50%30%
  • 9474Thu
  • 9574Fri
  • 9373Sat
daynightWeather update from Mount Vernon, Mount Vernon Airport at

Johnsonville 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
January-2°F68°F34°Fn/a
February1°F70°F34°Fn/a
March18°F82°F46°Fn/a
April27°F88°F56°F0.8"
May37°F91°F64°F0.5"
June51°F96°F75°F0.5"
July54°F97°F75°F0.6"
August51°F100°F75°F0.3"
September39°F95°F68°F0.5"
October30°F91°F56°F1.3"
November18°F77°F46°F0.2"
December3°F70°F35°F0.7"

Did you know?

  • The highest monthly average temperature in Johnsonville for August is 75 degrees.
  • The lowest monthly average temperature in Johnsonville for January is 34 degrees.
  • The most monthly precipitation in Johnsonville occurs in October with 1.3 inches.
  • The air quality index in Johnsonville is 21% better than the national average.
  • The pollution index in Johnsonville is 90% better than the national average.

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Compare Johnsonville, IL Weather To Other Cities

Johnsonville 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.
IndexJohnsonvilleIllinoisNational
Air quality index394150
Pollution index500,0043,347,2955,066,862

Johnsonville air quality information

MeasurementTotal
Days measured243
Days with good air quality204
Days with moderate air quality39
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Johnsonville air quality information

PollutantTotal
Arsenic0.001%
Benzene0.020%
Carbon Tetrachloride0.000%
Lead0.000%
Mercury0.000%

Average monthly Johnsonville temperature with heat index

Johnsonville monthly precipitation with daily maximum

Johnsonville monthly snow depth with daily maximum

Johnsonville monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Clay City, IL8243726%
Flora, IL4,9403726%
Jeffersonville, IL5113922%
Xenia, IL4753922%
Fairfield, IL4,9443922%
Johnsonville, IL583922%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Wamic, OR582648%
Hamlin, KS584510%
Aspen Springs, CA584314%
Brimson, MO584510%
Spring Hill, MN583334%
Johnsonville, IL583922%
Source: The Johnsonville, 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.