Henderson, IL Weather Forecast & Monthly Average Temperatures

TEMPERATURE	73°F
HUMIDITY	25%
PRESSURE	30.07 inHg
WIND COND.	50° 24.2 mph

Henderson Average Weather

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	-22°F	64°F	26°F	n/a
February	-9°F	64°F	27°F	n/a
March	9°F	77°F	40°F	n/a
April	18°F	84°F	52°F	n/a
May	25°F	88°F	62°F	n/a
June	45°F	95°F	72°F	n/a
July	48°F	100°F	74°F	n/a
August	43°F	109°F	73°F	n/a
September	36°F	91°F	66°F	n/a
October	21°F	91°F	53°F	n/a
November	10°F	73°F	42°F	n/a
December	-9°F	57°F	27°F	n/a

Did you know?

The highest monthly average temperature in Henderson for July is 74 degrees.
The lowest monthly average temperature in Henderson for January is 26 degrees.
The most monthly precipitation in Henderson occurs in January with 0 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.
Index	Henderson	Illinois	National
Air quality index	55	41	50
Pollution index	1,709,230	3,347,295	5,066,862

Henderson air quality information

Measurement	Total
Days measured	365
Days with good air quality	137
Days with moderate air quality	225
Days w/ poor A.Q. for sensitive groups	3
Days with unhealthy air quality

Henderson air quality information

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, State	Population	Air Quality Index	National Avg.
Galesburg, IL	31,469	48	4%
Victoria, IL	298	48	4%
Gilson, IL	160	48	4%
Oak Run, IL	528	48	4%
Knoxville, IL	2,793	48	4%
Henderson, IL	227	55	10%

Cities with similar population

City, State	Population	Air Quality Index	National Avg.
Coupland, TX	227	41	18%
Birmingham, MO	227	58	16%
Markham, WA	227	21	58%
Genoa, WI	227	40	20%
Basin, MT	227	35	30%
Henderson, IL	227	55	10%

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.