TODAY NOV22
TEMPERATURE37
HUMIDITY88
PRESSURE101250
WIND COND.310 16.6
  • 4635Fri
  • 4732Sat
  • 5647Sun
  • 5524Mon40%
  • 3926Tue
daynightWeather update from Danville, Vermilion County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Alvan for July is 74.4 degrees
  • The lowest monthly average temperature in Alvan for January is 27.3 degrees
  • The most monthly precipitation in Alvan occurs in August with 10.6 inches
  • The air quality index in Alvan is equal to the national average
  • The pollution index in Alvan is 259% worse than the national average

Compare Alvan, IL Weather

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      Alvan 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°F36°F27°F5.6"
      February20°F37°F28°F3.2"
      March33°F53°F42°F4.2"
      April44°F66°F54°F7.2"
      May54°F75°F64°F7.5"
      June63°F84°F73°F7.8"
      July64°F85°F74°F7.8"
      August62°F84°F73°F10.6"
      September56°F79°F66°F7.9"
      October45°F67°F55°F7.0"
      November34°F53°F43°F6.5"
      December26°F40°F32°F5.0"

      Alvan 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.
      IndexAlvanIllinoisNational
      Air quality index424142
      Pollution index9,793,5403,148,6942,726,193

      Alvan 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%
      Benzene0.070%
      Carbon Tetrachloride0.010%
      Lead0.001%
      Mercury0.040%

      Average monthly Alvan temperature with heat index

      Alvan monthly precipitation with daily maximum

      Alvan monthly snow depth with daily maximum

      Alvan monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Ambia, IN2224216.0%
      Boswell, IN7584216.0%
      Tilton, IL2,7974216.0%
      Danville, IL30,9694216.0%
      Henning, IL2584216.0%
      Alvan, IL3084216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Boligee, AL3083530.0%
      Willisville, AR3083530.0%
      Coal Creek town, CO308476.0%
      Twin Lakes, IA3083726.0%
      Edwardsport, IN308198.0%
      Alvan, IL3084216.0%
      Source: The Alvan, 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.