TODAY JUN24
TEMPERATURE94
HUMIDITY15
PRESSURE
WIND COND.333 6
  • 9560Sun
  • 8958Mon
  • 9257Tue
  • 8858Wed
  • 8959Thu
daynightWeather update from BLACK DIAMOND at

Brentwood 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
January20°F73°F46°F2.7"
February27°F75°F50°F2.8"
March32°F82°F52°F2.0"
April34°F94°F55°F1.0"
May37°F102°F62°F0.4"
June44°F109°F66°F0.0"
July49°F111°F71°F0.0"
August50°F106°F70°Fn/a
September42°F103°F67°F0.1"
October38°F94°F61°F1.0"
November27°F81°F54°F1.0"
December24°F70°F47°F2.0"

Did you know?

  • The highest monthly average temperature in Brentwood for July is 71 degrees.
  • The lowest monthly average temperature in Brentwood for January is 46 degrees.
  • The most monthly precipitation in Brentwood occurs in February with 2.8 inches.
  • The air quality index in Brentwood is 14% worse than the national average.
  • The pollution index in Brentwood is 170% worse than the national average.

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Compare Brentwood, CA Weather To Other Cities

Brentwood 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.
IndexBrentwoodCaliforniaNational
Air quality index575550
Pollution index13,698,50018,106,7265,066,862

Brentwood air quality information

MeasurementTotal
Days measured365
Days with good air quality128
Days with moderate air quality207
Days w/ poor A.Q. for sensitive groups21
Days with unhealthy air quality9

Brentwood air quality information

PollutantTotal
Arsenic0.040%
Benzene0.110%
Carbon Tetrachloride0.330%
Lead0.070%
Mercury0.120%

Average monthly Brentwood temperature with heat index

Brentwood monthly precipitation with daily maximum

Brentwood monthly snow depth with daily maximum

Brentwood monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Bay Point, CA23,1314314%
Camino Tassajara, CA3,4564314%
Clayton, CA11,6554314%
Pittsburg, CA67,9984314%
Blackhawk, CA9,4684314%
Brentwood, CA56,9235714%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Midwest City, OK56,930476%
Santee, CA56,8396122%
Sanford, FL57,0393530%
Oak Lawn, IL56,7746020%
Tinley Park, IL57,1256020%
Brentwood, CA56,9235714%
Source: The Brentwood, 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.