TODAY MAY07
TEMPERATURE66
HUMIDITY
PRESSURE30.01
WIND COND.270 11.2
  • 5945Sat90%
  • 5439Sun100%40%
  • 6039Mon
  • 6241Tue
  • 6344Wed
daynightWeather update from Logan County Airport at

Key findings

  • The highest monthly average temperature in Delavan for July is 75.7 degrees
  • The lowest monthly average temperature in Delavan for January is 27.8 degrees
  • The most monthly precipitation in Delavan occurs in September with 11.5 inches
  • The air quality index in Delavan is 18% better than the national average
  • The pollution index in Delavan is 87% better than the national average

Compare Delavan, IL Weather

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      Delavan 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
      January20°F37°F28°F2.6"
      February21°F39°F29°F3.2"
      March34°F55°F43°F4.1"
      April44°F67°F55°F6.7"
      May54°F76°F65°F4.6"
      June63°F85°F74°F8.5"
      July66°F87°F76°F11.2"
      August64°F86°F74°F8.1"
      September56°F80°F67°F11.5"
      October46°F68°F56°F6.3"
      November34°F54°F43°F5.1"
      December25°F40°F32°F5.3"

      Delavan 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.
      IndexDelavanIllinoisNational
      Air quality index414150
      Pollution index672,0313,347,2955,066,862

      Delavan air quality information

      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

      Delavan air quality information

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

      Average monthly Delavan temperature with heat index

      Delavan monthly precipitation with daily maximum

      Delavan monthly snow depth with daily maximum

      Delavan monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Mason City, IL2,2724020%
      New Holland, IL1874020%
      Forest City, IL2254118%
      San Jose, IL6454118%
      Tremont, IL1,9424118%
      Delavan, IL1,6004118%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Sedgwick, KS1,6004020%
      Hampden-Sydney, VA1,6002648%
      Bangs, TX1,5993334%
      Pleak, TX1,599524%
      Walnut, IL1,6014216%
      Delavan, IL1,6004118%
      Source: The Delavan, 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.