TODAY AUG19
TEMPERATURE67
HUMIDITY100
PRESSURE29.96
WIND COND.30 3.4
  • 8468Mon70%50%
  • 8163Tue
  • 8060Wed
  • 8162Thu
  • 8367Fri20%
daynightWeather update from Sparta Community-Hunter Field Airport at

Prairie du Rocher 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
January25°F42°F33°F4.6"
February27°F45°F35°F2.4"
March39°F58°F48°F3.7"
April48°F69°F58°F6.6"
May57°F77°F66°F10.0"
June66°F86°F76°F8.8"
July69°F88°F78°F6.8"
August67°F87°F76°F10.7"
September59°F81°F69°F7.4"
October48°F70°F58°F9.0"
November38°F57°F47°F6.5"
December30°F45°F37°F7.7"

Did you know?

  • The highest monthly average temperature in Prairie du Rocher for July is 78 degrees.
  • The lowest monthly average temperature in Prairie du Rocher for January is 33 degrees.
  • The most monthly precipitation in Prairie du Rocher occurs in August with 10.7 inches.
  • The air quality index in Prairie du Rocher is 20% worse than the national average.
  • The pollution index in Prairie du Rocher is 85% better than the national average.

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Compare Prairie du Rocher, IL Weather To Other Cities

Prairie du Rocher 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.
IndexPrairie du RocherIllinoisNational
Air quality index604150
Pollution index753,4733,347,2955,066,862

Prairie du Rocher 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

Prairie du Rocher air quality information

PollutantTotal
Arsenic0.001%
Benzene0.010%
Carbon Tetrachloride0.001%
Lead0.020%
Mercury0.020%

Average monthly Prairie du Rocher temperature with heat index

Prairie du Rocher monthly precipitation with daily maximum

Prairie du Rocher monthly snow depth with daily maximum

Prairie du Rocher monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Chester, IL8,5996020%
Kaskaskia, IL206020%
Bloomsdale, MO5686020%
Weingarten, MO806020%
Ellis Grove, IL3536020%
Prairie du Rocher, IL6226020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Old Green, OK6223628%
Jamesport, MO6224510%
Arlee, MT6225510%
Rossiter, PA6223334%
Diamondville, WY6224020%
Prairie du Rocher, IL6226020%
Source: The Prairie du Rocher, 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.