TODAY FEB26
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 4233Fri70%
  • 4734Sat
  • 4622Sun
  • 3722Mon
  • 4931Tue
daynightWeather update from Chicago / West Chicago, Dupage Airport at

Key findings

  • The highest monthly average temperature in Bartlett for July is 74 degrees
  • The lowest monthly average temperature in Bartlett for January is 24 degrees
  • The most monthly precipitation in Bartlett occurs in May with 4.5 inches
  • The air quality index in Bartlett is 11% worse than the national average
  • The pollution index in Bartlett is 196% worse than the national average

Compare Bartlett, IL Weather

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      Bartlett 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°F34°F25°F1.2"
      March30°F49°F38°F2.2"
      April39°F62°F50°F3.8"
      May49°F73°F60°F4.5"
      June59°F82°F70°F4.4"
      July63°F85°F74°F4.1"
      August62°F83°F72°F3.8"
      September54°F77°F65°F3.4"
      October43°F64°F53°F3.1"
      November32°F50°F40°F1.9"
      December21°F36°F29°F2.1"

      Bartlett 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.
      IndexBartlettIllinoisNational
      Air quality index554150
      Pollution index14,981,3003,347,2955,066,862

      Bartlett air quality information

      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

      Bartlett air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.140%
      Carbon Tetrachloride0.030%
      Lead0.020%
      Mercury0.010%

      Average monthly Bartlett temperature with heat index

      Bartlett monthly precipitation with daily maximum

      Bartlett monthly snow depth with daily maximum

      Bartlett monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Prestbury, IL1,7800100%
      Lake in the Hills, IL28,9084216%
      Huntley, IL25,8314216%
      Pingree Grove, IL5,9834216%
      Algonquin, IL30,4134216%
      Bartlett, IL41,4755510%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Westfield, MA41,4864020%
      Riverton, UT41,521512%
      Findlay, OH41,4123922%
      South Valley, NM41,397536%
      Buffalo Grove, IL41,5545510%
      Bartlett, IL41,4755510%
      Source: The Bartlett, 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.