O'hare, Chicago, IL Weather - Forecast & Monthly Averages

TEMPERATURE	42
HUMIDITY	82
PRESSURE	101390
WIND COND.	330 20.5

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Weather Quick Facts

The highest monthly average temperature in O'hare for July is 76.3 degrees
The lowest monthly average temperature in O'hare for January is 26.2 degrees
The most monthly precipitation in O'hare occurs in August with 5.1 inches
The air quality index in O'hare is 31% worse than the national average
The pollution index in O'hare is 39% worse than the national average

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O'hare 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	20°F	34°F	26°F	1.9"
February	21°F	36°F	28°F	1.6"
March	33°F	49°F	40°F	2.4"
April	42°F	62°F	51°F	3.6"
May	52°F	73°F	61°F	4.3"
June	63°F	82°F	72°F	4.6"
July	68°F	86°F	76°F	3.5"
August	67°F	83°F	75°F	5.1"
September	60°F	77°F	68°F	2.8"
October	48°F	65°F	55°F	3.9"
November	36°F	51°F	43°F	2.2"
December	25°F	37°F	31°F	2.2"

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O'hare 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	O'hare	Chicago	Illinois
Air quality index	55	55	41
Pollution index	3,795,410	80,238,704	3,148,694

O'hare air quality

Measurement	Total
Days measured	365
Days with good air quality	121
Days with moderate air quality	227
Days w/ poor A.Q. for sensitive groups	16
Days with unhealthy air quality	1

Air quality details

Pollutant	Total
Arsenic	0.760%
Benzene	0.560%
Carbon Tetrachloride	0.280%
Lead	0.480%
Mercury	0.480%

Average monthly O'hare temperature with heat index

O'hare monthly precipitation with daily maximum

O'hare monthly snow depth with daily maximum

O'hare monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Arlington Heights, IL	75,071	55	10.0%
Brookfield, IL	18,520	55	10.0%
Forest View, IL	1,312	55	10.0%
Evanston, IL	73,979	55	10.0%
Harwood Heights, IL	8,393	55	10.0%
Chicago, IL	2,699,347	55	10.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Toronto, ON	3,013,752	n/a
Houston, TX	2,313,238	52	4.0%
Montréal, QC	1,811,008	n/a
Phoenix, AZ	1,658,422	74	48.0%
Philadelphia, PA	1,581,531	51	2.0%
Chicago, IL	2,699,347	55	10.0%

Source: The O'hare, Chicago, 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.