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Fountain Valley Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January48°F69°F57°F2.3"
February49°F69°F58°F1.9"
March52°F70°F60°F0.9"
April54°F72°F62°F0.6"
May59°F73°F65°F0.3"
June62°F76°F67°F0.0"
July66°F80°F71°F0.1"
August66°F82°F72°F0.0"
September65°F82°F72°F0.2"
October60°F79°F68°F0.5"
November54°F75°F63°F0.7"
December48°F68°F57°F2.4"

Did you know?

  • The highest monthly average temperature in Fountain Valley for August is 72 degrees.
  • The lowest monthly average temperature in Fountain Valley for December is 57 degrees.
  • The most monthly precipitation in Fountain Valley occurs in December with 2.4 inches.
  • The air quality index in Fountain Valley is 48% worse than the national average.
  • The pollution index in Fountain Valley is 83% better than the national average.

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Compare Fountain Valley, CA Weather To Other Cities

Fountain Valley 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.
IndexFountain ValleyCaliforniaNational
Air quality index745550
Pollution index858,65218,106,7265,066,862

Fountain Valley air quality information

MeasurementTotal
Days measured365
Days with good air quality25
Days with moderate air quality260
Days w/ poor A.Q. for sensitive groups76
Days with unhealthy air quality4

Fountain Valley air quality information

PollutantTotal
Arsenic0.002%
Benzene0.010%
Carbon Tetrachloride0.000%
Lead0.020%
Mercury0.001%

Average monthly Fountain Valley temperature with heat index

Fountain Valley monthly precipitation with daily maximum

Fountain Valley monthly snow depth with daily maximum

Fountain Valley monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Bellflower, CA77,6877448%
Fullerton, CA139,4917448%
La Palma, CA15,8347448%
Midway City, CA9,2357448%
Cypress, CA48,9787448%
Fountain Valley, CA56,6707448%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Valdosta, GA56,7173628%
Oak Lawn, IL56,7746020%
Taunton, MA56,5044510%
Santee, CA56,8396122%
Diamond Bar, CA56,4568570%
Fountain Valley, CA56,6707448%
Source: The Fountain Valley, 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.