Henderson, IL Weather - Forecast & Monthly Averages

TEMPERATURE	43
HUMIDITY	100
PRESSURE	102910
WIND COND.	350 5.4

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Weather Quick Facts

The highest monthly average temperature in Henderson for July is 74.7 degrees
The lowest monthly average temperature in Henderson for January is 24.4 degrees
The most monthly precipitation in Henderson occurs in September with 8.9 inches
The air quality index in Henderson is 9% worse than the national average
The pollution index in Henderson is 37% better than the national average

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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.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	17°F	34°F	24°F	3.4"
February	18°F	36°F	26°F	3.6"
March	32°F	52°F	41°F	3.5"
April	41°F	65°F	52°F	6.9"
May	52°F	74°F	63°F	7.1"
June	62°F	83°F	72°F	7.9"
July	65°F	86°F	75°F	8.4"
August	63°F	84°F	73°F	7.4"
September	54°F	78°F	65°F	8.9"
October	44°F	66°F	54°F	5.8"
November	32°F	52°F	41°F	4.0"
December	22°F	37°F	29°F	4.5"

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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.
Index	Henderson	Illinois	National
Air quality index	46	41	42
Pollution index	1,709,230	3,148,694	2,726,193

Henderson air quality

Measurement	Total
Days measured	365
Days with good air quality	217
Days with moderate air quality	145
Days w/ poor A.Q. for sensitive groups	3
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.001%
Benzene	0.050%
Carbon Tetrachloride	0.040%
Lead	0.001%
Mercury	0.001%

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	Population	Air Quality Index	National Avg.
Monmouth, IL	8,837	32	36.0%
Wataga, IL	778	41	18.0%
East Galesburg, IL	579	41	18.0%
Galesburg, IL	30,405	41	18.0%
Gilson, IL	194	41	18.0%
Henderson, IL	280	46	8.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Chuichu, AZ	280	74	48.0%
Deep River, IA	280	35	30.0%
South English, IA	280	35	30.0%
Arlington, IN	280	28	44.0%
Burns, KS	280	40	20.0%
Henderson, IL	280	46	8.0%

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.