TODAY AUG18
TEMPERATURE90
HUMIDITY33
PRESSURE30.03
WIND COND.
  • 10060Sat
  • 9759Sun
  • 9358Mon
  • 9259Tue
  • 9560Wed
daynightWeather update from Vacaville Nut Tree Airport at

Hartley 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
January37°F60°F47°F5.6"
February41°F64°F52°F4.8"
March45°F69°F56°F4.6"
April47°F74°F60°F2.5"
May52°F82°F67°F0.7"
June57°F91°F74°F0.3"
July60°F96°F77°F0.0"
August59°F95°F75°F0.0"
September56°F92°F73°F0.1"
October50°F81°F64°F1.9"
November43°F68°F54°F2.3"
December37°F59°F47°F4.6"

Did you know?

  • The highest monthly average temperature in Hartley for July is 77 degrees.
  • The lowest monthly average temperature in Hartley for December is 47 degrees.
  • The most monthly precipitation in Hartley occurs in January with 5.6 inches.
  • The air quality index in Hartley is 13% better than the national average.
  • The pollution index in Hartley is 51% better than the national average.

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Compare Hartley, CA Weather To Other Cities

Hartley 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.
IndexHartleyCaliforniaNational
Air quality index435550
Pollution index2,457,15018,106,7265,066,862

Hartley air quality information

MeasurementTotal
Days measured365
Days with good air quality220
Days with moderate air quality143
Days w/ poor A.Q. for sensitive groups2
Days with unhealthy air quality

Hartley air quality information

PollutantTotal
Arsenic0.010%
Benzene0.080%
Carbon Tetrachloride0.002%
Lead0.010%
Mercury0.020%

Average monthly Hartley temperature with heat index

Hartley monthly precipitation with daily maximum

Hartley monthly snow depth with daily maximum

Hartley monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Green Valley CDP (Los Angeles County), CA1,0004314%
Suisun City, CA29,0454314%
Green Valley, CA1,2244314%
Elmira, CA2084314%
Lemon Hill, CA13,5754314%
Hartley, CA2,9884314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Park Hills, KY2,987548%
Leesburg, GA2,9894314%
Cayucos, CA2,9875612%
Fort Branch, IN2,989484%
Toftrees, PA2,9863922%
Hartley, CA2,9884314%
Source: The Hartley, 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.