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Montclair 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
January44°F69°F56°F2.3"
February45°F70°F57°F2.0"
March48°F74°F60°F1.2"
April51°F77°F62°F0.7"
May55°F81°F66°F0.4"
June60°F88°F72°F0.0"
July65°F94°F77°F0.1"
August65°F95°F78°F0.0"
September64°F93°F76°F0.2"
October57°F84°F69°F0.4"
November49°F77°F62°F0.6"
December43°F68°F55°F2.6"

Did you know?

  • The highest monthly average temperature in Montclair for August is 78 degrees.
  • The lowest monthly average temperature in Montclair for December is 55 degrees.
  • The most monthly precipitation in Montclair occurs in December with 2.6 inches.
  • The air quality index in Montclair is 70% worse than the national average.
  • The pollution index in Montclair is 349% worse than the national average.

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Montclair 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.
IndexMontclairCaliforniaNational
Air quality index855550
Pollution index22,790,90018,106,7265,066,862

Montclair air quality information

MeasurementTotal
Days measured365
Days with good air quality24
Days with moderate air quality211
Days w/ poor A.Q. for sensitive groups102
Days with unhealthy air quality25

Montclair air quality information

PollutantTotal
Arsenic0.060%
Benzene0.190%
Carbon Tetrachloride0.010%
Lead0.220%
Mercury0.230%

Average monthly Montclair temperature with heat index

Montclair monthly precipitation with daily maximum

Montclair monthly snow depth with daily maximum

Montclair monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Fullerton, CA139,4917448%
Valinda, CA24,8707448%
Azusa, CA48,4987448%
La Habra, CA61,6607448%
Vincent, CA16,4167448%
Montclair, CA38,2948570%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Carpentersville, IL38,2756020%
Friendswood, TX38,272524%
Hanover Park, IL38,3316020%
Chelsea, MA38,244476%
Florence, SC38,2214020%
Montclair, CA38,2948570%
Source: The Montclair, 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.