TODAY MAR29
TEMPERATURE49
HUMIDITY48
PRESSURE101630
WIND COND.290 14.8
  • 5647Fri90%
  • 6139Sat50%
  • 5143Sun20%90%
  • 5441Mon
  • 5034Tue
daynightWeather update from Chicago, Chicago Midway Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Posen for July is 74 degrees
  • The lowest monthly average temperature in Posen for January is 25.6 degrees
  • The most monthly precipitation in Posen occurs in July with 8 inches
  • The air quality index in Posen is 31% worse than the national average
  • The pollution index in Posen is 43% better than the national average

Compare Posen, IL Weather

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      Posen 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"

      Posen 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.
      IndexPosenIllinoisNational
      Air quality index554142
      Pollution index1,558,0703,148,6942,726,193

      Posen 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

      Posen air quality information

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

      Average monthly Posen temperature with heat index

      Posen monthly precipitation with daily maximum

      Posen monthly snow depth with daily maximum

      Posen monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Brookfield, IL18,5205510.0%
      Chicago Heights, IL29,5985510.0%
      Lansing, IL27,6145510.0%
      Steger, IL9,2895510.0%
      Flossmoor, IL9,3185510.0%
      Posen, IL5,7725510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Fruitridge Pocket, CA5,771524.0%
      Leesville, LA5,7733040.0%
      Centerport, NY5,7734314.0%
      Central City, KY5,7704314.0%
      The Village of Indian Hill, OH5,770548.0%
      Posen, IL5,7725510.0%
      Source: The Posen, 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.