TODAY NOV21
TEMPERATURE33
HUMIDITY88
PRESSURE100140
WIND COND.270 22.3
  • 4631Fri
  • 4432Sat
  • 4938Sun
  • 4625Mon
  • 3623Tue
daynightWeather update from Chicago/Waukegan Regional Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Johnsburg for July is 72 degrees
  • The lowest monthly average temperature in Johnsburg for January is 23.8 degrees
  • The most monthly precipitation in Johnsburg occurs in June with 4.5 inches
  • The air quality index in Johnsburg is 7% better than the national average
  • The pollution index in Johnsburg is 80% better than the national average

Compare Johnsburg, IL Weather

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      Johnsburg 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
      January16°F32°F24°F1.4"
      February17°F33°F25°F1.5"
      March28°F45°F36°F2.6"
      April37°F57°F46°F4.1"
      May47°F68°F57°F3.7"
      June57°F77°F67°F4.5"
      July63°F82°F72°F4.4"
      August62°F80°F71°F3.7"
      September55°F73°F64°F3.3"
      October44°F62°F52°F3.4"
      November33°F49°F40°F2.0"
      December22°F36°F29°F2.5"

      Johnsburg 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.
      IndexJohnsburgIllinoisNational
      Air quality index394142
      Pollution index543,5163,148,6942,726,193

      Johnsburg air quality

      MeasurementTotal
      Days measured203
      Days with good air quality174
      Days with moderate air quality28
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.000%
      Benzene0.004%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Johnsburg temperature with heat index

      Johnsburg monthly precipitation with daily maximum

      Johnsburg monthly snow depth with daily maximum

      Johnsburg monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Lake Geneva, WI7,8723726.0%
      Lake Ivanhoe, WI3983726.0%
      Greenwood, IL3523726.0%
      Hebron, IL1,7303726.0%
      Bloomfield, WI4,7253726.0%
      Johnsburg, IL6,3543922.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Ramtown, NJ6,3544118.0%
      Champion Heights, OH6,3544216.0%
      Saint-Calixte, QC6,354n/a 
      Waveland, MS6,3524216.0%
      Sidney, MT6,3513432.0%
      Johnsburg, IL6,3543922.0%
      Source: The Johnsburg, 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.