TODAY JAN18
TEMPERATURE56
HUMIDITY30
PRESSURE29.93
WIND COND.87 4
  • 7751
  • 6547Tue
  • 7452Wed
  • 7348Thu
  • 6344Fri
daynightWeather update from Simi Valley - Cochran at

Key findings

  • The highest monthly average temperature in Chatsworth for August is 73 degrees
  • The lowest monthly average temperature in Chatsworth for December is 57 degrees
  • The most monthly precipitation in Chatsworth occurs in January with 3.5 inches
  • The air quality index in Chatsworth is 45% worse than the national average
  • The pollution index in Chatsworth is 2653% worse than the national average

Compare Los Angeles, CA Weather

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      Chatsworth 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
      January48°F70°F58°F3.5"
      February50°F70°F59°F2.9"
      March52°F72°F61°F1.5"
      April55°F74°F63°F0.7"
      May58°F75°F65°F0.5"
      June61°F78°F68°F0.0"
      July65°F83°F72°F0.0"
      August65°F84°F73°F0.0"
      September64°F85°F72°F0.3"
      October60°F81°F69°F0.7"
      November54°F75°F63°F0.8"
      December48°F69°F57°F2.8"

      Chatsworth 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.
      IndexChatsworthLos AngelesCalifornia
      Air quality index727255
      Pollution index139,490,000139,490,00018,106,726

      Chatsworth air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality66
      Days with moderate air quality208
      Days w/ poor A.Q. for sensitive groups62
      Days with unhealthy air quality28

      Chatsworth air quality information

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

      Average monthly Chatsworth temperature with heat index

      Chatsworth monthly precipitation with daily maximum

      Chatsworth monthly snow depth with daily maximum

      Chatsworth monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Westlake Village, CA8,443468%
      Piru, CA1,950468%
      Thousand Oaks, CA128,623468%
      Beverly Hills, CA34,6277244%
      Simi Valley, CA126,1267244%
      Los Angeles, CA3,918,8727244%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Chicago, IL2,714,0175510%
      Houston, TX2,240,582524%
      Philadelphia, PA1,559,938512%
      Phoenix, AZ1,555,3247448%
      San Antonio, TX1,439,358492%
      Los Angeles, CA3,918,8727244%
      Source: The Chatsworth, Los Angeles, 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.