TODAY NOV09
TEMPERATURE53
HUMIDITY74
PRESSURE102170
WIND COND.110 9.4
  • 6640Sun30%
  • 6037
  • 5840Tue
  • 6341Wed30%30%
  • 5736Thu
daynightWeather update from University of Illinois - Willard at
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Weather Quick Facts

  • The highest monthly average temperature in Allerton for August is 75.2 degrees
  • The lowest monthly average temperature in Allerton for February is 25.9 degrees
  • The most monthly precipitation in Allerton occurs in November with 7.3 inches
  • The air quality index in Allerton is equal to the national average
  • The pollution index in Allerton is 45% better than the national average

Compare Allerton, IL Weather

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      Allerton 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
      January22°F36°F29°F6.9"
      February19°F34°F26°F3.4"
      March33°F54°F42°F3.3"
      April41°F65°F52°F5.8"
      May52°F78°F65°F3.4"
      June63°F85°F74°F6.1"
      July63°F83°F73°F5.8"
      August65°F86°F75°F5.4"
      September57°F83°F69°F7.0"
      October46°F69°F57°F5.6"
      November33°F53°F42°F7.3"
      December21°F35°F27°F3.7"

      Allerton 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.
      IndexAllertonIllinoisNational
      Air quality index424142
      Pollution index1,494,1603,148,6942,726,193

      Allerton air quality

      MeasurementTotal
      Days measured365
      Days with good air quality281
      Days with moderate air quality84
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.040%
      Carbon Tetrachloride0.290%
      Lead0.010%
      Mercury0.010%

      Average monthly Allerton temperature with heat index

      Allerton monthly precipitation with daily maximum

      Allerton monthly snow depth with daily maximum

      Allerton monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Brocton, IL3354216.0%
      Broadlands, IL3404216.0%
      Muncie, IL1154216.0%
      Urbana, IL42,4614216.0%
      Sidney, IL1,2974216.0%
      Allerton, IL2674216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Manchester, CA2673334.0%
      No Name, CO2674412.0%
      Cantril, IA2672942.0%
      Compton, IL2670100.0%
      Little York, IN2673530.0%
      Allerton, IL2674216.0%
      Source: The Allerton, 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.