TODAY MAR01
TEMPERATURE30
HUMIDITY60
PRESSURE30.29
WIND COND.340 25.9
  • 4429Tue
  • 4626Wed
  • 4424Thu
  • 4427Fri
  • 4626Sat
daynightWeather update from Aurora Municipal Airport at

Key findings

  • 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 100% better than the national average
  • The pollution index in Big Rock is 63% better than the national average

Compare Big Rock, IL Weather

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      Big Rock Average Temperature

      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"

      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 index04150
      Pollution index1,874,4903,347,2955,066,862

      Big Rock air quality information

      MeasurementTotal
      Days measured335
      Days with good air quality334
      Days with moderate air quality1
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      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.
      Millbrook, IL3410100%
      Oswego, IL33,2450100%
      Sugar Grove, IL9,2880100%
      Plano, IL11,9290100%
      Millington, IL6290100%
      Big Rock, IL1,1390100%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Cotton Valley, LA1,1393922%
      Newark, IL1,1390100%
      Coffeeville, MS1,1393334%
      Spring Glen, UT1,139468%
      West Yellowstone, MT1,1392550%
      Big Rock, IL1,1390100%
      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.