Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 36°F | 58°F | 47°F | 3.8" |
February | 39°F | 62°F | 50°F | 3.4" |
March | 41°F | 66°F | 52°F | 3.0" |
April | 42°F | 69°F | 55°F | 1.6" |
May | 46°F | 74°F | 59°F | 0.5" |
June | 50°F | 80°F | 64°F | 0.3" |
July | 53°F | 81°F | 65°F | 0.0" |
August | 53°F | 80°F | 64°F | 0.0" |
September | 49°F | 82°F | 64°F | 0.1" |
October | 45°F | 76°F | 59°F | 1.3" |
November | 40°F | 66°F | 52°F | 1.8" |
December | 36°F | 58°F | 47°F | 3.8" |
Index | Petaluma | California | National |
Air quality index | 34 | 55 | 42 |
Pollution index | 7,898,290 | 10,473,190 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 346 |
Days with moderate air quality | 18 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 1 |
Pollutant | Total |
Arsenic | 0.260% |
Benzene | 0.080% |
Carbon Tetrachloride | 0.005% |
Lead | 0.240% |
Mercury | 0.270% |
City | Population | Air Quality Index | National Avg. |
Cotati, CA | 7,487 | 34 | 32.0% |
Glen Ellen, CA | 1,214 | 34 | 32.0% |
Rohnert Park, CA | 42,559 | 34 | 32.0% |
Graton, CA | 1,743 | 34 | 32.0% |
Tomales, CA | 160 | 34 | 32.0% |
Petaluma, CA | 60,865 | 34 | 32.0% |
City | Population | Air Quality Index | National Avg. |
Millcreek, UT | 60,828 | 51 | 2.0% |
Coconut Creek, FL | 60,935 | 41 | 18.0% |
Malden, MA | 60,710 | 43 | 14.0% |
Terre Haute, IN | 60,690 | 45 | 10.0% |
Marietta, GA | 60,687 | 52 | 4.0% |
Petaluma, CA | 60,865 | 34 | 32.0% |