TODAY DEC14
TEMPERATURE66
HUMIDITY
PRESSURE
WIND COND.70 9
  • 7150Fri
  • 7251Sat
  • 7152Sun
  • 6450Mon
  • 7050Tue
daynightWeather update from WHITTIER HILLS at

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Norwalk Average Temperature

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
January46°F72°F57°F2.3"
February48°F72°F58°F1.7"
March51°F75°F61°F1.0"
April54°F76°F64°F0.5"
May58°F78°F66°F0.3"
June62°F81°F70°F0.0"
July66°F86°F74°F0.1"
August66°F88°F75°F0.0"
September65°F88°F74°F0.2"
October59°F83°F69°F0.4"
November52°F77°F63°F0.6"
December45°F70°F56°F2.5"

Did you know?

  • The highest monthly average temperature in Norwalk for August is 75 degrees.
  • The lowest monthly average temperature in Norwalk for December is 56 degrees.
  • The most monthly precipitation in Norwalk occurs in December with 2.5 inches.
  • The air quality index in Norwalk is 48% worse than the national average.
  • The pollution index in Norwalk is 2652% worse than the national average.

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Compare Norwalk, CA Weather To Other Cities

Norwalk 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.
IndexNorwalkCaliforniaNational
Air quality index745550
Pollution index139,490,00018,106,7265,066,862

Norwalk 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

Norwalk air quality information

PollutantTotal
Arsenic0.200%
Benzene0.950%
Carbon Tetrachloride0.080%
Lead1.320%
Mercury0.440%

Average monthly Norwalk temperature with heat index

Norwalk monthly precipitation with daily maximum

Norwalk monthly snow depth with daily maximum

Norwalk monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Artesia, CA16,7897448%
Bellflower, CA77,6877448%
Carson, CA92,7807448%
Commerce, CA12,9977448%
Cypress, CA48,9787448%
Norwalk, CA106,3607448%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Pearland, TX106,238524%
Palm Bay, FL106,5733530%
Everett, WA106,580492%
Highlands Ranch, CO106,596548%
North Charleston, SC106,1133628%
Norwalk, CA106,3607448%
Source: The Norwalk, 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.