TODAY MAY09
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 7156
  • 7154Mon
  • 7555Tue
  • 7756Wed
  • 7756Thu
daynightWeather update from EW3225 Laguna Hills at

Key findings

  • The highest monthly average temperature in Mission Viejo for August is 72.2 degrees
  • The lowest monthly average temperature in Mission Viejo for December is 57 degrees
  • The most monthly precipitation in Mission Viejo occurs in December with 2.4 inches
  • The air quality index in Mission Viejo is 79% worse than the national average
  • The pollution index in Mission Viejo is 772% worse than the national average

Compare Mission Viejo, CA Weather

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      Mission Viejo 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°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"

      Mission Viejo 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.
      IndexMission ViejoCaliforniaNational
      Air quality index895550
      Pollution index44,192,60018,106,7265,066,862

      Mission Viejo air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality42
      Days with moderate air quality178
      Days w/ poor A.Q. for sensitive groups79
      Days with unhealthy air quality58

      Mission Viejo air quality information

      PollutantTotal
      Arsenic0.030%
      Benzene0.280%
      Carbon Tetrachloride0.001%
      Lead0.220%
      Mercury0.140%

      Average monthly Mission Viejo temperature with heat index

      Mission Viejo monthly precipitation with daily maximum

      Mission Viejo monthly snow depth with daily maximum

      Mission Viejo monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Ladera Ranch, CA27,1218978%
      San Juan Capistrano, CA36,0068978%
      Temescal Valley, CA24,7978978%
      Laguna Woods, CA16,3478978%
      Orange, CA139,9198978%
      Mission Viejo, CA96,1788978%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Portsmouth, VA96,0714020%
      Tuscaloosa, AL96,3523530%
      Lawton, OK96,7284314%
      Vacaville, CA95,6073530%
      Dearborn, MI95,5205612%
      Mission Viejo, CA96,1788978%
      Source: The Mission Viejo, 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.