TODAY OCT13
TEMPERATURE58
HUMIDITY40
PRESSURE101320
WIND COND.320 33.5
  • 543520%
  • 5428Tue20%
  • 5831Wed
  • 6441Thu
  • 6943Fri
daynightWeather update from Albertus Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Leaf River for July is 71.8 degrees
  • The lowest monthly average temperature in Leaf River for January is 21.7 degrees
  • The most monthly precipitation in Leaf River occurs in August with 7.3 inches
  • The air quality index in Leaf River is equal to the national average
  • The pollution index in Leaf River is 37% better than the national average

Compare Leaf River, IL Weather

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      Leaf River 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
      January14°F30°F22°F2.9"
      February15°F31°F23°F2.3"
      March29°F47°F37°F3.6"
      April38°F61°F48°F5.4"
      May49°F72°F60°F5.5"
      June58°F80°F69°F6.3"
      July62°F82°F72°F5.8"
      August60°F81°F70°F7.3"
      September52°F75°F63°F4.7"
      October42°F62°F51°F5.8"
      November30°F48°F39°F4.0"
      December19°F33°F26°F3.4"

      Leaf River 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.
      IndexLeaf RiverIllinoisNational
      Air quality index424142
      Pollution index1,721,0903,148,6942,726,193

      Leaf River air quality

      MeasurementTotal
      Days measured341
      Days with good air quality240
      Days with moderate air quality100
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.001%
      Benzene0.020%
      Carbon Tetrachloride0.001%
      Lead0.002%
      Mercury0.000%

      Average monthly Leaf River temperature with heat index

      Leaf River monthly precipitation with daily maximum

      Leaf River monthly snow depth with daily maximum

      Leaf River monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      German Valley, IL5654216.0%
      Oregon, IL3,7474216.0%
      Winnebago, IL3,5394216.0%
      Mount Morris, IL3,1824216.0%
      Polo, IL2,2104216.0%
      Leaf River, IL5104216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Buckley, IL5104216.0%
      West Baden Springs, IN510688.0%
      Olpe, KS5102256.0%
      Norbourne Estates, KY510492.0%
      Barton, MD5103628.0%
      Leaf River, IL5104216.0%
      Source: The Leaf River, 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.