TODAY JUL16
TEMPERATURE59
HUMIDITY87
PRESSURE29.92
WIND COND.300 8.1
  • 7657Tue
  • 7757Wed
  • 7358Thu
  • 7256Fri
  • 7356Sat
daynightWeather update from San Francisco, San Francisco International Airport at
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Hillsdale 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°F58°F51°F3.2"
February46°F62°F53°F3.4"
March47°F64°F54°F2.7"
April49°F67°F56°F1.7"
May51°F69°F58°F0.3"
June54°F72°F61°F0.2"
July56°F73°F62°F0.0"
August56°F73°F62°F0.0"
September56°F76°F63°F0.1"
October54°F73°F62°F1.0"
November49°F65°F56°F1.7"
December44°F58°F51°F4.4"

Did you know?

  • The highest monthly average temperature in Hillsdale for September is 63 degrees.
  • The lowest monthly average temperature in Hillsdale for January is 51 degrees.
  • The most monthly precipitation in Hillsdale occurs in December with 4.4 inches.
  • The air quality index in Hillsdale is 3% better than the national average.
  • The pollution index in Hillsdale is 90% worse than the national average.

Compare San Mateo, CA Weather To Other Cities

Hillsdale 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.
IndexHillsdaleSan MateoCalifornia
Air quality index484855
Pollution index9,645,6109,645,61018,106,726

Hillsdale air quality information

MeasurementTotal
Days measured365
Days with good air quality204
Days with moderate air quality153
Days w/ poor A.Q. for sensitive groups7
Days with unhealthy air quality1

Hillsdale air quality information

PollutantTotal
Arsenic0.140%
Benzene0.070%
Carbon Tetrachloride0.000%
Lead0.100%
Mercury0.020%

Average monthly Hillsdale temperature with heat index

Hillsdale monthly precipitation with daily maximum

Hillsdale monthly snow depth with daily maximum

Hillsdale monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
San Lorenzo, CA24,7904314%
Castro Valley, CA62,8254314%
South San Francisco, CA66,5874314%
Alameda, CA77,4094314%
Brisbane, CA4,5684314%
San Mateo, CA102,224484%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Sandy Springs, GA102,212524%
Clovis, CA102,1488060%
Davenport, IA102,3055510%
Lewisville, TX102,327548%
Rialto, CA102,4188570%
San Mateo, CA102,224484%
Source: The Hillsdale, San Mateo, 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.
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