TODAY SEP20
TEMPERATURE64
HUMIDITY87
PRESSURE29.77
WIND COND.110 3.4
  • 8163Thu
  • 8163Fri
  • 8565Sat
  • 8565Sun
  • 8565Mon
daynightWeather update from Santa Ana, John Wayne Airport-Orange County Airport at
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Tustin 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
January48°F69°F57°F2.3"
February49°F69°F58°F1.9"
March52°F70°F60°F0.9"
April54°F72°F62°F0.6"
May59°F73°F65°F0.3"
June62°F76°F67°F0.0"
July66°F80°F71°F0.1"
August66°F82°F72°F0.0"
September65°F82°F72°F0.2"
October60°F79°F68°F0.5"
November54°F75°F63°F0.7"
December48°F68°F57°F2.4"

Did you know?

  • The highest monthly average temperature in Tustin for August is 72 degrees.
  • The lowest monthly average temperature in Tustin for December is 57 degrees.
  • The most monthly precipitation in Tustin occurs in December with 2.4 inches.
  • The air quality index in Tustin is 70% worse than the national average.
  • The pollution index in Tustin is 772% worse than the national average.

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Compare Tustin, CA Weather To Other Cities

Tustin 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.
IndexTustinCaliforniaNational
Air quality index855550
Pollution index44,192,60018,106,7265,066,862

Tustin 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

Tustin air quality information

PollutantTotal
Arsenic0.030%
Benzene0.280%
Carbon Tetrachloride0.001%
Lead0.220%
Mercury0.140%

Average monthly Tustin temperature with heat index

Tustin monthly precipitation with daily maximum

Tustin monthly snow depth with daily maximum

Tustin monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
East Whittier, CA10,4357448%
Huntington Beach, CA198,7247448%
South Whittier, CA59,3137448%
Buena Park, CA82,7717448%
Fountain Valley, CA56,6707448%
Tustin, CA79,3968570%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Lawrence, MA79,3373628%
New Rochelle, NY79,299536%
Somerville, MA79,507476%
Napa, CA79,5674314%
Melbourne, FL78,9113530%
Tustin, CA79,3968570%
Source: The Tustin, 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.