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Key findings

  • The highest monthly average temperature in Rockbridge for August is 79.4 degrees
  • The lowest monthly average temperature in Rockbridge for December is 31.7 degrees
  • The most monthly precipitation in Rockbridge occurs in January with 9 inches
  • The air quality index in Rockbridge is 9% worse than the national average
  • The pollution index in Rockbridge is 77% better than the national average

Compare Rockbridge, IL Weather

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      Rockbridge 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
      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"

      Rockbridge 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.
      IndexRockbridgeIllinoisNational
      Air quality index544150
      Pollution index1,150,6703,347,2955,066,862

      Rockbridge air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality134
      Days with moderate air quality221
      Days w/ poor A.Q. for sensitive groups8
      Days with unhealthy air quality2

      Rockbridge air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.030%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Rockbridge temperature with heat index

      Rockbridge monthly precipitation with daily maximum

      Rockbridge monthly snow depth with daily maximum

      Rockbridge monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      White Hall, IL2,5264020%
      Greenfield, IL1,3174020%
      Modesto, IL1764020%
      Hettick, IL1254020%
      Chesterfield, IL3364020%
      Rockbridge, IL162548%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Acme, WA1623432%
      Portsmouth, IA1624020%
      Why, AZ1627448%
      El Indio, TX1622550%
      Homestead, MO162476%
      Rockbridge, IL162548%
      Source: The Rockbridge, 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.