TODAY AUG22
TEMPERATURE71
HUMIDITY87
PRESSURE29.97
WIND COND.270 5.8
  • 8461Sat
  • 8465Sun
  • 7863Mon40%
  • 7755Tue
  • 7655Wed
daynightWeather update from Aurora Municipal Airport at

Big Rock 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
January15°F32°F23°F1.5"
February16°F34°F24°F1.4"
March29°F49°F38°F2.3"
April39°F62°F50°F3.9"
May49°F73°F61°F4.3"
June59°F82°F70°F4.5"
July62°F84°F73°F4.3"
August60°F82°F71°F4.3"
September53°F77°F64°F2.9"
October42°F64°F52°F3.6"
November30°F50°F40°F2.1"
December20°F36°F28°F2.2"

Did you know?

  • The highest monthly average temperature in Big Rock for July is 73 degrees.
  • The lowest monthly average temperature in Big Rock for January is 23 degrees.
  • The most monthly precipitation in Big Rock occurs in June with 4.5 inches.
  • The air quality index in Big Rock is 97% better than the national average.
  • The pollution index in Big Rock is 63% better than the national average.

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Compare Big Rock, IL Weather To Other Cities

Big Rock 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.
IndexBig RockIllinoisNational
Air quality index14150
Pollution index1,874,4903,347,2955,066,862

Big Rock air quality information

MeasurementTotal
Days measured351
Days with good air quality351
Days with moderate air quality
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Big Rock air quality information

PollutantTotal
Arsenic0.002%
Benzene0.030%
Carbon Tetrachloride0.010%
Lead0.010%
Mercury0.010%

Average monthly Big Rock temperature with heat index

Big Rock monthly precipitation with daily maximum

Big Rock monthly snow depth with daily maximum

Big Rock monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Kaneville, IL421198%
Prestbury, IL1,780198%
Sugar Grove, IL9,288198%
Yorkville, IL18,436198%
Lake Holiday, IL4,718198%
Big Rock, IL1,139198%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Newark, IL1,139198%
Coffeeville, MS1,1393334%
West Yellowstone, MT1,1392452%
Cotton Valley, LA1,1394314%
Spring Glen, UT1,1394020%
Big Rock, IL1,139198%
Source: The Big Rock, 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.