TODAY OCT09
TEMPERATURE79
HUMIDITY24
PRESSURE101730
WIND COND.
  • 7749Thu
  • 8455Fri
  • 7447Sat20%
  • 6739Sun
  • 5635
daynightWeather update from Illinois Valley Regional Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Troy Grove for July is 75.2 degrees
  • The lowest monthly average temperature in Troy Grove for January is 25.7 degrees
  • The most monthly precipitation in Troy Grove occurs in August with 8.2 inches
  • The air quality index in Troy Grove is 100% better than the national average
  • The pollution index in Troy Grove is 31% better than the national average

Compare Troy Grove, IL Weather

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      Troy Grove 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°F26°F3.3"
      February19°F35°F26°F3.0"
      March32°F51°F40°F4.3"
      April42°F64°F52°F7.2"
      May53°F75°F63°F8.0"
      June62°F83°F72°F7.5"
      July66°F85°F75°F7.1"
      August64°F83°F73°F8.2"
      September56°F78°F66°F6.3"
      October45°F65°F54°F6.6"
      November34°F51°F42°F4.3"
      December23°F37°F30°F3.5"

      Troy Grove 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.
      IndexTroy GroveIllinoisNational
      Air quality index04142
      Pollution index1,874,4903,148,6942,726,193

      Troy Grove air quality

      MeasurementTotal
      Days measured335
      Days with good air quality334
      Days with moderate air quality1
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.002%
      Benzene0.030%
      Carbon Tetrachloride0.010%
      Lead0.010%
      Mercury0.010%

      Average monthly Troy Grove temperature with heat index

      Troy Grove monthly precipitation with daily maximum

      Troy Grove monthly snow depth with daily maximum

      Troy Grove monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      La Moille, IL8010100.0%
      Leland, IL9320100.0%
      De Pue, IL1,7240100.0%
      Standard, IL2810100.0%
      LaSalle, IL9,0860100.0%
      Troy Grove, IL2100100.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Cantwell, AK2103824.0%
      Shungnak, AK2103824.0%
      White Hills, AZ210548.0%
      Monson, CA2106632.0%
      Point Reyes Station, CA2103432.0%
      Troy Grove, IL2100100.0%
      Source: The Troy Grove, 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.