TODAY MAY09
TEMPERATURE45
HUMIDITY70
PRESSURE30.03
WIND COND.
  • 5537Sun70%
  • 5634Mon
  • 6036Tue
  • 6642Wed
  • 6645Thu
daynightWeather update from Janesville-Rock County at

Key findings

  • The highest monthly average temperature in South Beloit for July is 74 degrees
  • The lowest monthly average temperature in South Beloit for January is 22.5 degrees
  • The most monthly precipitation in South Beloit occurs in August with 5.3 inches
  • The air quality index in South Beloit is 24% better than the national average
  • The pollution index in South Beloit is 88% worse than the national average

Compare South Beloit, IL Weather

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      South Beloit 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
      January14°F32°F23°F1.7"
      February15°F35°F25°F1.6"
      March27°F50°F38°F2.7"
      April37°F64°F50°F4.3"
      May47°F75°F61°F3.4"
      June58°F84°F71°F5.1"
      July62°F86°F74°F4.9"
      August61°F84°F72°F5.3"
      September53°F79°F65°F2.8"
      October42°F66°F53°F2.9"
      November30°F51°F40°F2.4"
      December18°F36°F27°F2.5"

      South Beloit 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.
      IndexSouth BeloitIllinoisNational
      Air quality index384150
      Pollution index9,518,9303,347,2955,066,862

      South Beloit air quality information

      MeasurementTotal
      Days measured203
      Days with good air quality185
      Days with moderate air quality18
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      South Beloit air quality information

      PollutantTotal
      Arsenic0.005%
      Benzene0.090%
      Carbon Tetrachloride0.020%
      Lead0.160%
      Mercury0.090%

      Average monthly South Beloit temperature with heat index

      South Beloit monthly precipitation with daily maximum

      South Beloit monthly snow depth with daily maximum

      South Beloit monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Hanover, WI1773824%
      Janesville, WI63,8803824%
      Orfordville, WI1,3113824%
      Beloit, WI36,8123824%
      Footville, WI7183824%
      South Beloit, IL7,5893824%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Hawthorn Woods, IL7,5905510%
      Holly Springs, MS7,5914510%
      Franklin, CA7,586484%
      Sanger, TX7,595512%
      Rockton, IL7,5964216%
      South Beloit, IL7,5893824%
      Source: The South Beloit, 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.