TODAY MAR02
TEMPERATURE77
HUMIDITY
PRESSURE
WIND COND.121 11.3
  • 6346Wed50%30%
  • 6851Thu
  • 7850Fri
  • 6747Sat
  • 6747Sun
daynightWeather update from SANTA FE DAM at

Key findings

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

Compare Monrovia, CA Weather

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      Monrovia 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"

      Monrovia 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.
      IndexMonroviaCaliforniaNational
      Air quality index725550
      Pollution index139,490,00018,106,7265,066,862

      Monrovia 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

      Monrovia air quality information

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

      Average monthly Monrovia temperature with heat index

      Monrovia monthly precipitation with daily maximum

      Monrovia monthly snow depth with daily maximum

      Monrovia monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Azusa, CA48,4987244%
      Citrus, CA11,7807244%
      Irwindale, CA1,3197244%
      Valinda, CA24,8707244%
      West Puente Valley, CA24,4767244%
      Monrovia, CA37,0907244%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Greenfield, WI37,0704412%
      La Presa, CA37,1106428%
      Calumet City, IL37,1125510%
      Braintree Town, MA37,0664314%
      Elmont, NY37,057512%
      Monrovia, CA37,0907244%
      Source: The Monrovia, 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.