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Henderson 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
January17°F34°F24°F3.4"
February18°F36°F26°F3.6"
March32°F52°F41°F3.5"
April41°F65°F52°F6.9"
May52°F74°F63°F7.1"
June62°F83°F72°F7.9"
July65°F86°F75°F8.4"
August63°F84°F73°F7.4"
September54°F78°F65°F8.9"
October44°F66°F54°F5.8"
November32°F52°F41°F4.0"
December22°F37°F29°F4.5"

Did you know?

  • The highest monthly average temperature in Henderson for July is 75 degrees.
  • The lowest monthly average temperature in Henderson for January is 24 degrees.
  • The most monthly precipitation in Henderson occurs in September with 8.9 inches.
  • The air quality index in Henderson is 10% worse than the national average.
  • The pollution index in Henderson is 66% better than the national average.

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Henderson 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.
IndexHendersonIllinoisNational
Air quality index554150
Pollution index1,709,2303,347,2955,066,862

Henderson air quality information

MeasurementTotal
Days measured365
Days with good air quality137
Days with moderate air quality225
Days w/ poor A.Q. for sensitive groups3
Days with unhealthy air quality

Henderson air quality information

PollutantTotal
Arsenic0.001%
Benzene0.050%
Carbon Tetrachloride0.040%
Lead0.001%
Mercury0.001%

Average monthly Henderson temperature with heat index

Henderson monthly precipitation with daily maximum

Henderson monthly snow depth with daily maximum

Henderson monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
East Galesburg, IL737484%
Galesburg, IL31,469484%
Victoria, IL298484%
Gilson, IL160484%
Oak Run, IL528484%
Henderson, IL2275510%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Birmingham, MO2275816%
Rhinecliff, NY2273628%
Conway, MI2273628%
Albion, CA2272648%
Grand River, IA2274118%
Henderson, IL2275510%
Source: The Henderson, 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.