TODAY SEP24
TEMPERATURE73
HUMIDITY60
PRESSURE
WIND COND.202 5
  • 8861Tue
  • 9261Wed
  • 9361Thu
  • 8762Fri
  • 8262Sat
daynightWeather update from CLAREMONT at
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San Dimas 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 San Dimas for August is 78 degrees.
  • The lowest monthly average temperature in San Dimas for December is 55 degrees.
  • The most monthly precipitation in San Dimas occurs in December with 2.6 inches.
  • The air quality index in San Dimas is 70% worse than the national average.
  • The pollution index in San Dimas is 2652% worse than the national average.

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Compare San Dimas, CA Weather To Other Cities

San Dimas 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.
IndexSan DimasCaliforniaNational
Air quality index855550
Pollution index139,490,00018,106,7265,066,862

San Dimas 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

San Dimas air quality information

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

Average monthly San Dimas temperature with heat index

San Dimas monthly precipitation with daily maximum

San Dimas monthly snow depth with daily maximum

San Dimas monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Azusa, CA48,4987448%
Hacienda Heights, CA54,0337448%
La Habra Heights, CA5,4067448%
Mayflower Village, CA5,6697448%
North El Monte, CA4,0587448%
San Dimas, CA34,1098570%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Bay City, MI34,110285470%
Redan, GA34,100524%
Seaside, CA34,1203628%
Hinesville, GA34,1274020%
Dakota Ridge, CO34,1334216%
San Dimas, CA34,1098570%
Source: The San Dimas, 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.