TODAY AUG19
TEMPERATURE86
HUMIDITY59
PRESSURE29.97
WIND COND.10 8.1
  • 8569Sun
  • 8166Mon70%60%
  • 7960Tue20%
  • 7957Wed
  • 8059Thu
daynightWeather update from St. Charles, St. Charles County Smartt Airport at

Rockbridge 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
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"

Did you know?

  • The highest monthly average temperature in Rockbridge for August is 79 degrees.
  • The lowest monthly average temperature in Rockbridge for December is 32 degrees.
  • The most monthly precipitation in Rockbridge occurs in January with 9 inches.
  • The air quality index in Rockbridge is 20% worse than the national average.
  • The pollution index in Rockbridge is 77% better than the national average.

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Compare Rockbridge, IL Weather To Other Cities

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 index604150
Pollution index1,150,6703,347,2955,066,862

Rockbridge 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

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.
Hettick, IL1253530%
Modesto, IL1763530%
Scottville, IL823530%
Chesterfield, IL3363530%
Palmyra, IL5793530%
Rockbridge, IL1626020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Homestead, MO1625816%
Climax Springs, MO1623726%
Koliganek, AK1622942%
Shelly, MN1623530%
Palmer, KS1623236%
Rockbridge, IL1626020%
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.