TODAY FEB25
TEMPERATURE53
HUMIDITY
PRESSURE30.1
WIND COND.80 5.4
  • 6948Thu
  • 7245Fri
  • 7046Sat
  • 7146Sun
  • 7147Mon
daynightWeather update from San Luis Obispo, San Luis Obispo County-Mc Chesney Field at

Key findings

  • The highest monthly average temperature in San Luis Obispo for September is 65 degrees
  • The lowest monthly average temperature in San Luis Obispo for December is 52 degrees
  • The most monthly precipitation in San Luis Obispo occurs in January with 3.9 inches
  • The air quality index in San Luis Obispo is 8% better than the national average
  • The pollution index in San Luis Obispo is 11% worse than the national average

Compare San Luis Obispo, CA Weather

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      San Luis Obispo 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
      January41°F68°F53°F3.9"
      February43°F67°F54°F2.6"
      March45°F69°F55°F2.2"
      April47°F71°F57°F1.4"
      May49°F73°F59°F0.3"
      June52°F77°F62°F0.1"
      July55°F79°F64°F0.1"
      August56°F80°F64°F0.0"
      September55°F82°F65°F0.0"
      October52°F80°F63°F0.9"
      November46°F73°F57°F1.1"
      December41°F66°F52°F3.1"

      San Luis Obispo 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 Luis ObispoCaliforniaNational
      Air quality index465550
      Pollution index5,611,11018,106,7265,066,862

      San Luis Obispo air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality230
      Days with moderate air quality132
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality0

      San Luis Obispo air quality information

      PollutantTotal
      Arsenic0.020%
      Benzene0.060%
      Carbon Tetrachloride0.000%
      Lead0.060%
      Mercury0.010%

      Average monthly San Luis Obispo temperature with heat index

      San Luis Obispo monthly precipitation with daily maximum

      San Luis Obispo monthly snow depth with daily maximum

      San Luis Obispo monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Blacklake, CA895468%
      Los Osos, CA15,603468%
      Los Berros, CA718468%
      Santa Margarita, CA1,346468%
      Callender, CA1,814468%
      San Luis Obispo, CA46,716468%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Palm Springs, CA46,7148978%
      Twin Falls, ID46,6232060%
      Texas City, TX46,811524%
      North Highlands, CA46,841524%
      Hattiesburg, MS46,8463530%
      San Luis Obispo, CA46,716468%
      Source: The San Luis Obispo, 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.