TODAY OCT24
TEMPERATURE57
HUMIDITY81
PRESSURE29.99
WIND COND.
  • 7253Wed
  • 7554Thu
  • 7756Fri
  • 7856Sat
  • 7455Sun
daynightWeather update from Hayward, Hayward Air Terminal at
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San Lorenzo 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
January42°F58°F50°F3.5"
February46°F61°F53°F3.3"
March46°F64°F54°F2.6"
April48°F66°F56°F1.8"
May52°F69°F59°F0.6"
June56°F73°F62°F0.1"
July57°F75°F64°F0.0"
August58°F76°F64°F0.0"
September57°F76°F64°F0.2"
October53°F72°F61°F1.4"
November48°F66°F56°F1.3"
December42°F58°F49°F3.2"

Did you know?

  • The highest monthly average temperature in San Lorenzo for August is 64 degrees.
  • The lowest monthly average temperature in San Lorenzo for December is 49 degrees.
  • The most monthly precipitation in San Lorenzo occurs in January with 3.5 inches.
  • The air quality index in San Lorenzo is 13% better than the national average.
  • The pollution index in San Lorenzo is 26% worse than the national average.

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San Lorenzo 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 LorenzoCaliforniaNational
Air quality index435550
Pollution index6,427,29018,106,7265,066,862

San Lorenzo air quality information

MeasurementTotal
Days measured365
Days with good air quality241
Days with moderate air quality115
Days w/ poor A.Q. for sensitive groups9
Days with unhealthy air quality

San Lorenzo air quality information

PollutantTotal
Arsenic0.010%
Benzene0.110%
Carbon Tetrachloride0.010%
Lead0.010%
Mercury0.003%

Average monthly San Lorenzo temperature with heat index

San Lorenzo monthly precipitation with daily maximum

San Lorenzo monthly snow depth with daily maximum

San Lorenzo monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Orinda, CA18,9364314%
San Miguel CDP (San Luis Obispo County), CA2,6964314%
Alamo, CA16,0784314%
Danville, CA43,7584314%
Lafayette, CA25,3814314%
San Lorenzo, CA24,7904314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Chanhassen, MN24,7964412%
Freeport, IL24,7843138%
Temescal Valley, CA24,7978570%
Caledonia, WI24,7673530%
Woodburn, OR24,7653138%
San Lorenzo, CA24,7904314%
Source: The San Lorenzo, 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.