TODAY NOV02
TEMPERATURE61
HUMIDITY36
PRESSURE102570
WIND COND.140 13
  • 6360Sun40%50%
  • 7062Mon100%90%
  • 6743Tue100%
  • 5941Wed
  • 6140Thu
daynightWeather update from Marshall County Airport at
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Weather Quick Facts

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

Compare Henry, IL Weather

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      Henry 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"

      Henry 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.
      IndexHenryIllinoisNational
      Air quality index414142
      Pollution index339,1563,148,6942,726,193

      Henry 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 Henry temperature with heat index

      Henry monthly precipitation with daily maximum

      Henry monthly snow depth with daily maximum

      Henry monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Magnolia, IL2630100.0%
      Bureau Junction, IL2200100.0%
      Mark, IL5340100.0%
      Cedar Point, IL2120100.0%
      De Pue, IL1,7240100.0%
      Henry, IL2,3524118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Mayodan, NC2,3524314.0%
      Woodbine, NJ2,3524020.0%
      Croom, MD2,353476.0%
      Flora, MS2,3534412.0%
      Collierville, CA2,3544510.0%
      Henry, IL2,3524118.0%
      Source: The Henry, 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.