Northwest, Santa Ana, CA Weather - Forecast & Monthly Averages

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Weather Quick Facts

The highest monthly average temperature in Northwest for August is 72.2 degrees
The lowest monthly average temperature in Northwest for December is 57 degrees
The most monthly precipitation in Northwest occurs in December with 2.4 inches
The air quality index in Northwest is 111% worse than the national average
The pollution index in Northwest is 69% better than the national average

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Northwest 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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Northwest 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	Northwest	Santa Ana	California
Air quality index	89	89	55
Pollution index	858,652	858,652	10,473,190

Northwest air quality

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

Air quality details

Pollutant	Total
Arsenic	0.002%
Benzene	0.010%
Carbon Tetrachloride	0.000%
Lead	0.020%
Mercury	0.001%

Average monthly Northwest temperature with heat index

Northwest monthly precipitation with daily maximum

Northwest monthly snow depth with daily maximum

Northwest monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Hacienda Heights, CA	55,386	72	44.0%
Bellflower, CA	76,339	72	44.0%
Fullerton, CA	141,061	72	44.0%
Lakewood, CA	79,676	72	44.0%
Norwalk, CA	104,524	72	44.0%
Santa Ana, CA	332,610	89	78.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Riverside, CA	327,569	89	78.0%
Corpus Christi, TX	326,332	42	16.0%
Lexington-Fayette, KY	322,200	42	16.0%
Vaughan, ON	321,974	n/a
Honolulu, HI	347,181	30	40.0%
Santa Ana, CA	332,610	89	78.0%

Source: The Northwest, Santa Ana, 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.