TODAY DEC22
TEMPERATURE37
HUMIDITY59
PRESSURE102610
WIND COND.180 25.9
  • 4530Mon20%
  • 4136Tue
  • 443930%
  • 5146Thu40%
  • 5547Fri
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Weather Quick Facts

  • The highest monthly average temperature in Peoria for July is 76.3 degrees
  • The lowest monthly average temperature in Peoria for January is 25.9 degrees
  • The most monthly precipitation in Peoria occurs in June with 5.4 inches
  • The air quality index in Peoria is 3% better than the national average
  • The pollution index in Peoria is 75% better than the national average

Compare Peoria, IL Weather

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      Peoria 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
      January17°F37°F26°F2.3"
      February18°F39°F28°F2.1"
      March31°F54°F42°F3.1"
      April41°F67°F54°F4.7"
      May51°F77°F64°F4.4"
      June62°F85°F73°F5.4"
      July65°F88°F76°F3.4"
      August64°F86°F74°F3.5"
      September56°F81°F68°F4.1"
      October44°F68°F55°F3.4"
      November33°F55°F43°F2.9"
      December22°F39°F30°F2.7"

      Peoria 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.
      IndexPeoriaIllinoisNational
      Air quality index414142
      Pollution index672,0313,148,6942,726,193

      Peoria air quality

      MeasurementTotal
      Days measured365
      Days with good air quality285
      Days with moderate air quality78
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.001%
      Benzene0.030%
      Carbon Tetrachloride0.000%
      Lead0.001%
      Mercury0.020%

      Average monthly Peoria temperature with heat index

      Peoria monthly precipitation with daily maximum

      Peoria monthly snow depth with daily maximum

      Peoria monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      South Pekin, IL1,0614118.0%
      Creve Coeur, IL5,0744118.0%
      Peoria Heights, IL5,8254118.0%
      East Peoria, IL22,6154118.0%
      Morton, IL15,7914118.0%
      Peoria, IL112,6444118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Clovis, CA112,6636020.0%
      Delta, BC112,691n/a 
      Manchester, NH112,4413726.0%
      High Point, NC112,4344020.0%
      Costa Mesa, CA112,9588978.0%
      Peoria, IL112,6444118.0%
      Source: The Peoria, 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.