TODAY FEB25
TEMPERATURE62
HUMIDITY61
PRESSURE29.95
WIND COND.221
  • 7449Thu
  • 7548Fri
  • 7450Sat
  • 7448Sun
  • 7549Mon
daynightWeather update from DW6637 Yorba Linda at

Key findings

  • The highest monthly average temperature in Placentia for August is 75 degrees
  • The lowest monthly average temperature in Placentia for December is 56 degrees
  • The most monthly precipitation in Placentia occurs in December with 2.5 inches
  • The air quality index in Placentia is 79% worse than the national average
  • The pollution index in Placentia is 83% better than the national average

Compare Placentia, CA Weather

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      Placentia 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"

      Placentia 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.
      IndexPlacentiaCaliforniaNational
      Air quality index895550
      Pollution index858,65218,106,7265,066,862

      Placentia 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

      Placentia air quality information

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

      Average monthly Placentia temperature with heat index

      Placentia monthly precipitation with daily maximum

      Placentia monthly snow depth with daily maximum

      Placentia monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Hawaiian Gardens, CA14,4687244%
      La Palma, CA15,8347244%
      Pico Rivera, CA63,7247244%
      South Whittier, CA59,3137244%
      Whittier, CA86,6307244%
      Placentia, CA52,1688978%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      La Crosse, WI52,1403530%
      Florissant, MO52,218548%
      Peabody, MA52,2354314%
      Perth Amboy, NJ52,265512%
      Stratford, CT52,3004314%
      Placentia, CA52,1688978%
      Source: The Placentia, 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.