TODAY APR19
TEMPERATURE42
HUMIDITY82
PRESSURE29.96
WIND COND.270 24.1
  • 4230Tue50%20%
  • 4931Wed
  • 5540Thu
  • 5744Fri30%40%
  • 5838Sat30%
daynightWeather update from Moline, Quad-City Airport at

Key findings

  • The highest monthly average temperature in Rock Island for July is 75.6 degrees
  • The lowest monthly average temperature in Rock Island for January is 24 degrees
  • The most monthly precipitation in Rock Island occurs in June with 6 inches
  • The air quality index in Rock Island is 8% better than the national average
  • The pollution index in Rock Island is 21% better than the national average

Compare Rock Island, IL Weather

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

      Rock Island 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°F34°F24°F1.5"
      February16°F37°F26°F1.9"
      March29°F53°F40°F2.8"
      April39°F66°F52°F3.9"
      May49°F76°F63°F4.3"
      June60°F85°F73°F6.0"
      July64°F88°F76°F5.3"
      August62°F86°F73°F4.9"
      September54°F81°F66°F3.4"
      October42°F68°F54°F3.2"
      November31°F54°F42°F2.1"
      December19°F37°F28°F2.6"

      Rock Island 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.
      IndexRock IslandIllinoisNational
      Air quality index464150
      Pollution index4,003,1303,347,2955,066,862

      Rock Island air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality217
      Days with moderate air quality145
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality0

      Rock Island air quality information

      PollutantTotal
      Arsenic0.170%
      Benzene0.050%
      Carbon Tetrachloride0.110%
      Lead0.020%
      Mercury0.010%

      Average monthly Rock Island temperature with heat index

      Rock Island monthly precipitation with daily maximum

      Rock Island monthly snow depth with daily maximum

      Rock Island monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Princeton, IA1,1004216%
      Cordova, IL6454216%
      Riverdale, IA481468%
      East Moline, IL21,394468%
      Reynolds, IL444468%
      Rock Island, IL38,647468%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Muskogee, OK38,605590%
      Hurst, TX38,690512%
      Stanton, CA38,5947244%
      South Miami Heights, FL38,7364118%
      Severna Park, MD38,514468%
      Rock Island, IL38,647468%
      Source: The Rock Island, 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.