Winnetka, Los Angeles, CA Weather - Forecast & Monthly Averages

TEMPERATURE	58
HUMIDITY	70
PRESSURE	101800
WIND COND.	120 14.8

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Weather Quick Facts

The highest monthly average temperature in Winnetka for August is 72.5 degrees
The lowest monthly average temperature in Winnetka for December is 57 degrees
The most monthly precipitation in Winnetka occurs in January with 3.5 inches
The air quality index in Winnetka is 71% worse than the national average
The pollution index in Winnetka is 5017% worse than the national average

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Winnetka 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	48°F	70°F	58°F	3.5"
February	50°F	70°F	59°F	2.9"
March	52°F	72°F	61°F	1.5"
April	55°F	74°F	63°F	0.7"
May	58°F	75°F	65°F	0.5"
June	61°F	78°F	68°F	0.0"
July	65°F	83°F	72°F	0.0"
August	65°F	84°F	73°F	0.0"
September	64°F	85°F	72°F	0.3"
October	60°F	81°F	69°F	0.7"
November	54°F	75°F	63°F	0.8"
December	48°F	69°F	57°F	2.8"

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Winnetka 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	Winnetka	Los Angeles	California
Air quality index	72	72	55
Pollution index	139,490,000	139,490,000	10,473,190

Winnetka air quality information

Measurement	Total
Days measured	365
Days with good air quality	66
Days with moderate air quality	208
Days w/ poor A.Q. for sensitive groups	62
Days with unhealthy air quality	28

Winnetka air quality information

Pollutant	Total
Arsenic	0.200%
Benzene	0.950%
Carbon Tetrachloride	0.080%
Lead	1.320%
Mercury	0.440%

Average monthly Winnetka temperature with heat index

Winnetka monthly precipitation with daily maximum

Winnetka monthly snow depth with daily maximum

Winnetka monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Westlake Village, CA	8,203	46	8.0%
Piru, CA	2,126	46	8.0%
Bell Canyon, CA	1,991	72	44.0%
Santa Susana, CA	924	72	44.0%
Culver City, CA	38,913	72	44.0%
Los Angeles, CA	3,973,278	72	44.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Toronto, ON	3,013,752	n/a
Chicago, IL	2,699,347	55	10.0%
Houston, TX	2,313,238	52	4.0%
Montréal, QC	1,811,008	n/a
Phoenix, AZ	1,658,422	74	48.0%
Los Angeles, CA	3,973,278	72	44.0%

Source: The Winnetka, Los Angeles, CA 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.