TODAY DEC22
TEMPERATURE32
HUMIDITY64
PRESSURE102850
WIND COND.170 18.4
  • 4429Mon20%
  • 4035Tue
  • 4338
  • 5045Thu40%
  • 5446Fri
daynightWeather update from Marshall County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Rome for July is 74.3 degrees
  • The lowest monthly average temperature in Rome for January is 25.1 degrees
  • The most monthly precipitation in Rome occurs in August with 8.3 inches
  • The air quality index in Rome is 3% better than the national average
  • The pollution index in Rome is 88% better than the national average

Compare Rome, IL Weather

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      Rome 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
      January18°F34°F25°F3.2"
      February19°F36°F27°F3.2"
      March32°F51°F41°F5.1"
      April42°F64°F52°F6.5"
      May53°F74°F63°F7.0"
      June62°F82°F72°F7.0"
      July65°F85°F74°F7.2"
      August64°F84°F73°F8.3"
      September57°F78°F66°F7.1"
      October45°F65°F54°F6.0"
      November34°F52°F42°F4.6"
      December23°F38°F30°F3.8"

      Rome 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.
      IndexRomeIllinoisNational
      Air quality index414142
      Pollution index339,1563,148,6942,726,193

      Rome air quality

      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

      Air quality details

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

      Average monthly Rome temperature with heat index

      Rome monthly precipitation with daily maximum

      Rome monthly snow depth with daily maximum

      Rome monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Lacon, IL1,7714118.0%
      Metamora, IL3,8404118.0%
      East Peoria, IL22,6154118.0%
      West Peoria, IL4,5104118.0%
      Bellevue, IL2,3364118.0%
      Rome, IL1,3944118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Mount Hermon, CA1,3943530.0%
      Tangent, OR1,3942844.0%
      Fort-Coulonge, QC1,394n/a 
      Oneida 41, ON1,394n/a 
      Riverdale Park, CA1,393492.0%
      Rome, IL1,3944118.0%
      Source: The Rome, 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.