TODAY DEC22
TEMPERATURE33
HUMIDITY75
PRESSURE101930
WIND COND.150 24.1
  • 3830Mon30%
  • 3731Tue
  • 3934
  • 4439Thu
  • 5142Fri40%40%
daynightWeather update from Dubuque Regional Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Hanover for July is 74 degrees
  • The lowest monthly average temperature in Hanover for January is 22.8 degrees
  • The most monthly precipitation in Hanover occurs in June with 8.9 inches
  • The air quality index in Hanover is equal to the national average
  • The pollution index in Hanover is 42% better than the national average

Compare Hanover, IL Weather

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      Hanover 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
      January15°F32°F23°F2.0"
      February16°F34°F25°F2.7"
      March31°F50°F39°F5.0"
      April41°F64°F51°F6.5"
      May51°F75°F62°F4.6"
      June61°F83°F71°F8.9"
      July64°F85°F74°F4.5"
      August61°F83°F72°F4.9"
      September54°F78°F65°F3.6"
      October43°F64°F53°F3.1"
      November32°F50°F40°F2.9"
      December20°F35°F28°F4.0"

      Hanover 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.
      IndexHanoverIllinoisNational
      Air quality index424142
      Pollution index1,592,9103,148,6942,726,193

      Hanover air quality

      MeasurementTotal
      Days measured364
      Days with good air quality268
      Days with moderate air quality96
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.090%
      Benzene0.030%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.010%

      Average monthly Hanover temperature with heat index

      Hanover monthly precipitation with daily maximum

      Hanover monthly snow depth with daily maximum

      Hanover monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Elizabeth, IL9062942.0%
      Galena, IL3,1682942.0%
      The Galena Territory, IL1,4242942.0%
      Stockton, IL1,6562942.0%
      Apple Canyon Lake, IL6392942.0%
      Hanover, IL7134216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Caddo Valley, AR7133236.0%
      Round Valley, AZ7136020.0%
      Parkway Village, KY713492.0%
      North Brentwood, MD713476.0%
      Bassett, NE7131962.0%
      Hanover, IL7134216.0%
      Source: The Hanover, 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.