TODAY JUN24
TEMPERATURE77
HUMIDITY54
PRESSURE
WIND COND.248 8
  • 8161Sun
  • 8561Mon
  • 8661Tue
  • 8660Wed
  • 8260Thu
daynightWeather update from SANTA FE DAM at

Monrovia Average Weather

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
January16°F73°F43°Fn/a
February19°F72°F44°Fn/a
March19°F81°F45°Fn/a
April23°F84°F50°Fn/a
May32°F86°F60°F0.4"
June36°F91°F67°Fn/a
July57°F99°F76°F0.0"
August48°F97°F73°Fn/a
September36°F95°F68°Fn/a
October27°F86°F57°Fn/a
November28°F82°F54°Fn/a
December19°F73°F44°Fn/a

Did you know?

  • The highest monthly average temperature in Monrovia for July is 76 degrees.
  • The lowest monthly average temperature in Monrovia for January is 43 degrees.
  • The most monthly precipitation in Monrovia occurs in May with 0.4 inches.
  • The air quality index in Monrovia is 48% worse than the national average.
  • The pollution index in Monrovia is 2652% worse than the national average.

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Compare Monrovia, CA Weather To Other Cities

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 index745550
Pollution index139,490,00018,106,7265,066,862

Monrovia 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

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.
Valinda, CA24,8707448%
Walnut Park, CA15,7917448%
Whittier, CA86,6307448%
Avocado Heights, CA16,1887448%
Bell Gardens, CA42,8057448%
Monrovia, CA37,0907448%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
La Presa, CA37,1106122%
Greenfield, WI37,0704510%
Calumet City, IL37,1126020%
Braintree Town, MA37,066476%
Elmont, NY37,057536%
Monrovia, CA37,0907448%
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.