Pomona, CA Weather - Forecast & Monthly Averages

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Key findings

The highest monthly average temperature in Pomona for August is 76.6 degrees
The lowest monthly average temperature in Pomona for December is 53.1 degrees
The most monthly precipitation in Pomona occurs in December with 2 inches
The air quality index in Pomona is 79% worse than the national average
The pollution index in Pomona is 736% worse than the national average

Compare Pomona, CA Weather

Pomona 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	40°F	70°F	54°F	1.6"
February	41°F	71°F	55°F	1.4"
March	44°F	75°F	58°F	0.8"
April	47°F	78°F	61°F	0.4"
May	52°F	82°F	65°F	0.3"
June	57°F	89°F	71°F	0.0"
July	62°F	94°F	76°F	0.1"
August	61°F	96°F	77°F	0.0"
September	59°F	94°F	74°F	0.1"
October	52°F	86°F	67°F	0.3"
November	44°F	78°F	60°F	0.4"
December	39°F	69°F	53°F	2.0"

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Pomona 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	Pomona	California	National
Air quality index	89	55	50
Pollution index	22,790,900	10,473,190	2,726,193

Pomona 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

Pomona air quality information

Pollutant	Total
Arsenic	0.060%
Benzene	0.190%
Carbon Tetrachloride	0.010%
Lead	0.220%
Mercury	0.230%

Average monthly Pomona temperature with heat index

Pomona monthly precipitation with daily maximum

Pomona monthly snow depth with daily maximum

Pomona monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Vincent, CA	16,416	72	44.0%
La Habra Heights, CA	5,406	72	44.0%
Buena Park, CA	82,771	72	44.0%
North El Monte, CA	4,058	72	44.0%
Baldwin Park, CA	76,511	72	44.0%
Pomona, CA	151,807	89	78.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Alexandria, VA	151,473	47	6.0%
Pasadena, TX	153,286	52	4.0%
Escondido, CA	149,912	64	28.0%
Lakewood, CO	149,793	58	16.0%
Kansas City, KS	149,755	47	6.0%
Pomona, CA	151,807	89	78.0%

Source: The Pomona, 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.