TODAY NOV19
TEMPERATURE68
HUMIDITY
PRESSURE30.04
WIND COND.217 4
  • 6854Tue
  • 6757Wed50%
  • 645460%
  • 6454Fri
  • 6653Sat
daynightWeather update from EW3219 National City at

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National City 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
January49°F68°F58°F2.0"
February51°F68°F59°F1.8"
March54°F69°F61°F1.1"
April56°F70°F63°F0.6"
May60°F71°F65°F0.3"
June63°F73°F67°F0.0"
July67°F77°F71°F0.2"
August68°F78°F72°F0.1"
September66°F79°F72°F0.2"
October61°F77°F68°F0.7"
November55°F73°F64°F0.9"
December50°F68°F58°F2.3"

Did you know?

  • The highest monthly average temperature in National City for August is 72 degrees.
  • The lowest monthly average temperature in National City for January is 58 degrees.
  • The most monthly precipitation in National City occurs in December with 2.3 inches.
  • The air quality index in National City is 22% worse than the national average.
  • The pollution index in National City is 804% worse than the national average.

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Compare National City, CA Weather To Other Cities

National City 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.
IndexNational CityCaliforniaNational
Air quality index615550
Pollution index45,820,50018,106,7265,066,862

National City air quality information

MeasurementTotal
Days measured365
Days with good air quality69
Days with moderate air quality277
Days w/ poor A.Q. for sensitive groups17
Days with unhealthy air quality1

National City air quality information

PollutantTotal
Arsenic1.130%
Benzene0.410%
Carbon Tetrachloride0.030%
Lead0.600%
Mercury0.080%

Average monthly National City temperature with heat index

National City monthly precipitation with daily maximum

National City monthly snow depth with daily maximum

National City monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Chula Vista, CA260,5986122%
Granite Hills, CA3,0716122%
La Mesa, CA59,1256122%
San Diego, CA1,374,8126122%
Winter Gardens, CA21,2556122%
National City, CA60,3496122%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Auburn, AL60,3183922%
Cupertino, CA60,297484%
Bristol, CT60,4373922%
Taylorsville, UT60,448476%
Palm Harbor, FL60,2364314%
National City, CA60,3496122%
Source: The National City, 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.