TODAY MAY15
TEMPERATURE46
HUMIDITY
PRESSURE30.24
WIND COND.
  • 7054Sat50%
  • 7158Sun60%60%
  • 7360Mon50%70%
  • 7461Tue
  • 7962Wed
daynightWeather update from Mount Vernon, Mount Vernon Airport at

Key findings

  • The highest monthly average temperature in Dahlgren for July is 76.7 degrees
  • The lowest monthly average temperature in Dahlgren for January is 31.8 degrees
  • The most monthly precipitation in Dahlgren occurs in August with 11 inches
  • The air quality index in Dahlgren is 14% better than the national average
  • The pollution index in Dahlgren is 89% better than the national average

Compare Dahlgren, IL Weather

      vs
      How would you rate the weather in Dahlgren?
      Write a review to give others more information about this area.
      How would you rate the air quality in Dahlgren?
      Write a review to give others more information about this area.
      See all Dahlgren poll results

      Dahlgren 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
      January23°F42°F32°F3.7"
      February25°F44°F34°F3.5"
      March37°F58°F46°F5.2"
      April46°F70°F57°F8.7"
      May54°F77°F65°F6.1"
      June63°F87°F74°F8.3"
      July66°F89°F77°F8.1"
      August64°F88°F75°F11.0"
      September57°F81°F68°F5.5"
      October45°F70°F56°F5.6"
      November34°F56°F44°F7.5"
      December28°F45°F36°F6.9"

      Dahlgren 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.
      IndexDahlgrenIllinoisNational
      Air quality index434150
      Pollution index569,1783,347,2955,066,862

      Dahlgren air quality information

      MeasurementTotal
      Days measured344
      Days with good air quality269
      Days with moderate air quality74
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Dahlgren air quality information

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

      Average monthly Dahlgren temperature with heat index

      Dahlgren monthly precipitation with daily maximum

      Dahlgren monthly snow depth with daily maximum

      Dahlgren monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Sims, IL2764314%
      Opdyke, IL2154314%
      McLeansboro, IL2,8014314%
      Bluford, IL6944314%
      Wayne City, IL9514314%
      Dahlgren, IL4024314%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Ogilvie, MN4023236%
      Crisman, CO402476%
      Risco, MO4022648%
      Springboro, PA4023432%
      Pollocksville, NC4024216%
      Dahlgren, IL4024314%
      Source: The Dahlgren, 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.