TODAY NOV07
TEMPERATURE55
HUMIDITY55
PRESSURE102740
WIND COND.250 5.4
  • 5842Fri
  • 5748Sat90%
  • 6145Sun40%
  • 5740
  • 5644Tue
daynightWeather update from Chicago / Wheeling, Pal-Waukee Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Deerfield for July is 74.5 degrees
  • The lowest monthly average temperature in Deerfield for January is 24.9 degrees
  • The most monthly precipitation in Deerfield occurs in June with 4.7 inches
  • The air quality index in Deerfield is 31% worse than the national average
  • The pollution index in Deerfield is 39% worse than the national average

Compare Deerfield, IL Weather

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      Deerfield 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
      January18°F33°F25°F1.1"
      February19°F34°F26°F1.4"
      March30°F48°F38°F1.8"
      April39°F60°F49°F2.7"
      May49°F71°F60°F3.6"
      June60°F81°F69°F4.7"
      July65°F85°F74°F4.0"
      August64°F83°F73°F4.4"
      September56°F76°F66°F2.7"
      October45°F64°F54°F3.2"
      November34°F50°F42°F1.7"
      December23°F37°F30°F2.0"

      Deerfield 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.
      IndexDeerfieldIllinoisNational
      Air quality index554142
      Pollution index3,795,4103,148,6942,726,193

      Deerfield air quality

      MeasurementTotal
      Days measured365
      Days with good air quality121
      Days with moderate air quality227
      Days w/ poor A.Q. for sensitive groups16
      Days with unhealthy air quality1

      Air quality details

      PollutantTotal
      Arsenic0.030%
      Benzene0.050%
      Carbon Tetrachloride0.010%
      Lead0.003%
      Mercury0.310%

      Average monthly Deerfield temperature with heat index

      Deerfield monthly precipitation with daily maximum

      Deerfield monthly snow depth with daily maximum

      Deerfield monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Third Lake, IL1,1603922.0%
      Wauconda, IL13,6293922.0%
      Lake Bluff, IL5,5403922.0%
      Hainesville, IL3,5953922.0%
      Round Lake, IL18,2353922.0%
      Deerfield, IL19,0305510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Liberal, KS19,0251570.0%
      Phelan, CA19,0388978.0%
      Seabrook, MD19,020476.0%
      Port Alberni, BC19,018n/a 
      Highland, UT19,012468.0%
      Deerfield, IL19,0305510.0%
      Source: The Deerfield, 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.