Lake Forest, CA Weather - Forecast & Monthly Averages

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Weather Quick Facts

The highest monthly average temperature in Lake Forest for August is 72.2 degrees
The lowest monthly average temperature in Lake Forest for December is 57 degrees
The most monthly precipitation in Lake Forest occurs in December with 2.4 inches
The air quality index in Lake Forest is 111% worse than the national average
The pollution index in Lake Forest is 1521% worse than the national average

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Lake Forest 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	69°F	57°F	2.3"
February	49°F	69°F	58°F	1.9"
March	52°F	70°F	60°F	0.9"
April	54°F	72°F	62°F	0.6"
May	59°F	73°F	65°F	0.3"
June	62°F	76°F	67°F	0.0"
July	66°F	80°F	71°F	0.1"
August	66°F	82°F	72°F	0.0"
September	65°F	82°F	72°F	0.2"
October	60°F	79°F	68°F	0.5"
November	54°F	75°F	63°F	0.7"
December	48°F	68°F	57°F	2.4"

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Lake Forest 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	Lake Forest	California	National
Air quality index	89	55	42
Pollution index	44,192,600	10,473,190	2,726,193

Lake Forest air quality information

Measurement	Total
Days measured	365
Days with good air quality	42
Days with moderate air quality	178
Days w/ poor A.Q. for sensitive groups	79
Days with unhealthy air quality	58

Lake Forest air quality information

Pollutant	Total
Arsenic	0.030%
Benzene	0.280%
Carbon Tetrachloride	0.001%
Lead	0.220%
Mercury	0.140%

Average monthly Lake Forest temperature with heat index

Lake Forest monthly precipitation with daily maximum

Lake Forest monthly snow depth with daily maximum

Lake Forest monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Laguna Beach, CA	22,991	89	78.0%
Corona, CA	168,112	89	78.0%
Costa Mesa, CA	112,958	89	78.0%
Las Flores, CA	5,089	89	78.0%
North Tustin, CA	25,147	89	78.0%
Lake Forest, CA	84,666	89	78.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Largo, FL	84,666	43	14.0%
Danbury, CT	84,650	43	14.0%
Hemet, CA	84,686	89	78.0%
Bloomington, IN	84,691	42	16.0%
New Braunfels, TX	84,622	49	2.0%
Lake Forest, CA	84,666	89	78.0%

Source: The Lake Forest, 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.