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Key findings

  • The highest monthly average temperature in Macomb for July is 75 degrees
  • The lowest monthly average temperature in Macomb for January is 26 degrees
  • The most monthly precipitation in Macomb occurs in June with 10.8 inches
  • The air quality index in Macomb is 42% better than the national average
  • The pollution index in Macomb is 80% better than the national average

Compare Macomb, IL Weather

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      Macomb 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°F35°F26°F3.6"
      February19°F38°F27°F3.0"
      March33°F53°F42°F3.4"
      April43°F67°F54°F5.4"
      May53°F76°F64°F7.4"
      June63°F84°F73°F10.8"
      July65°F85°F75°F8.6"
      August63°F84°F73°F8.8"
      September55°F80°F66°F8.0"
      October44°F68°F55°F8.3"
      November33°F54°F42°F6.4"
      December23°F38°F30°F5.1"

      Macomb 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.
      IndexMacombIllinoisNational
      Air quality index294150
      Pollution index1,001,7103,347,2955,066,862

      Macomb air quality information

      MeasurementTotal
      Days measured120
      Days with good air quality101
      Days with moderate air quality19
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Macomb air quality information

      PollutantTotal
      Arsenic0.004%
      Benzene0.040%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.020%

      Average monthly Macomb temperature with heat index

      Macomb monthly precipitation with daily maximum

      Macomb monthly snow depth with daily maximum

      Macomb monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Adair, IL1782942%
      Colchester, IL1,4922942%
      Sciota, IL672942%
      Bardolph, IL2732942%
      Good Hope, IL3962942%
      Macomb, IL18,7712942%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Mill Creek East, WA18,7714510%
      East Hemet, CA18,7648978%
      North Salt Lake, UT18,753512%
      Arlington, WA18,7492452%
      Secaucus, NJ18,737512%
      Macomb, IL18,7712942%
      Source: The Macomb, 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.