| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 58°F | 48°F | 3.3" |
| February | 43°F | 62°F | 52°F | 3.0" |
| March | 45°F | 67°F | 54°F | 1.8" |
| April | 47°F | 71°F | 57°F | 1.9" |
| May | 52°F | 78°F | 63°F | 0.6" |
| June | 56°F | 85°F | 68°F | 0.0" |
| July | 58°F | 90°F | 71°F | 0.0" |
| August | 57°F | 90°F | 70°F | 0.0" |
| September | 56°F | 86°F | 68°F | 0.0" |
| October | 50°F | 77°F | 62°F | 1.4" |
| November | 45°F | 68°F | 55°F | 1.2" |
| December | 40°F | 57°F | 47°F | 2.3" |
| Index | Rollingwood | California | National |
| Air quality index | 43 | 55 | 50 |
| Pollution index | 19,202,400 | 18,106,726 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 241 |
| Days with moderate air quality | 115 |
| Days w/ poor A.Q. for sensitive groups | 9 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.180% |
| Benzene | 0.140% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.280% |
| Mercury | 0.060% |
| City, State | Population | Air Quality Index | National Avg. |
| Alto, CA | 649 | 43 | 14% |
| Berkeley, CA | 118,585 | 43 | 14% |
| Crockett, CA | 3,103 | 43 | 14% |
| Emeryville, CA | 11,111 | 43 | 14% |
| Kentfield, CA | 6,907 | 43 | 14% |
| Rollingwood, CA | 3,231 | 43 | 14% |
| City, State | Population | Air Quality Index | National Avg. |
| Kingstree, SC | 3,232 | 40 | 20% |
| Ebensburg, PA | 3,232 | 45 | 10% |
| Coplay, PA | 3,232 | 47 | 6% |
| Kings Beach, CA | 3,230 | 44 | 12% |
| Abernathy, TX | 3,233 | 26 | 48% |
| Rollingwood, CA | 3,231 | 43 | 14% |