TODAY DEC12
TEMPERATURE55
HUMIDITY52
PRESSURE30.17
WIND COND.
  • 6645
  • 7246Thu
  • 6645Fri
  • 6447Sat
  • 6348Sun
daynightWeather update from San Luis Obispo, San Luis Obispo County-Mc Chesney Field at

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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"

Did you know?

  • 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 12% worse than the national average.
  • The pollution index in San Luis Obispo is 10% worse than the national average.

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Compare San Luis Obispo, CA Weather To Other Cities

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 index565550
Pollution index5,611,11018,106,7265,066,862

San Luis Obispo air quality information

MeasurementTotal
Days measured365
Days with good air quality129
Days with moderate air quality227
Days w/ poor A.Q. for sensitive groups8
Days with unhealthy air quality

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.
Callender, CA1,8145612%
Grover Beach, CA13,4845612%
Morro Bay, CA10,5195612%
Arroyo Grande, CA17,8425612%
Cayucos, CA2,9875612%
San Luis Obispo, CA46,7165612%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Palm Springs, CA46,7148570%
Twin Falls, ID46,6231374%
Texas City, TX46,811524%
North Highlands, CA46,8415510%
Hattiesburg, MS46,8463922%
San Luis Obispo, CA46,7165612%
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.