TODAY MAY05
TEMPERATURE54
HUMIDITY48
PRESSURE30.15
WIND COND.30 16.6
  • 5641Thu80%20%
  • 5838Fri20%20%
  • 5842Sat
  • 5541Sun
  • 5740Mon
daynightWeather update from Lansing Municipal Airport at

Key findings

  • The highest monthly average temperature in Markham for July is 74 degrees
  • The lowest monthly average temperature in Markham for January is 25.6 degrees
  • The most monthly precipitation in Markham occurs in July with 8 inches
  • The air quality index in Markham is 11% worse than the national average
  • The pollution index in Markham is 69% better than the national average

Compare Markham, IL Weather

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      Markham 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°F34°F26°F4.5"
      February19°F35°F27°F3.6"
      March31°F49°F39°F4.4"
      April40°F62°F50°F5.4"
      May50°F72°F60°F6.5"
      June60°F81°F70°F5.8"
      July64°F84°F74°F8.0"
      August63°F82°F72°F7.5"
      September56°F76°F65°F5.4"
      October45°F64°F54°F6.2"
      November33°F51°F42°F5.4"
      December24°F38°F31°F3.8"

      Markham 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.
      IndexMarkhamIllinoisNational
      Air quality index554150
      Pollution index1,558,0703,347,2955,066,862

      Markham 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

      Markham air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.010%
      Carbon Tetrachloride0.070%
      Lead0.090%
      Mercury0.010%

      Average monthly Markham temperature with heat index

      Markham monthly precipitation with daily maximum

      Markham monthly snow depth with daily maximum

      Markham monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Steger, IL9,5355510%
      Flossmoor, IL9,2155510%
      Homewood, IL19,2805510%
      Tinley Park, IL57,1255510%
      Burbank, IL29,0875510%
      Markham, IL12,6335510%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Lincolnwood, IL12,6375510%
      Loveland, OH12,641548%
      San Anselmo, CA12,6234020%
      Dallas, GA12,622524%
      Georgetown, GA12,6213922%
      Markham, IL12,6335510%
      Source: The Markham, 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.