| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 44°F | 58°F | 51°F | 3.2" |
| February | 46°F | 62°F | 53°F | 3.4" |
| March | 47°F | 64°F | 54°F | 2.7" |
| April | 49°F | 67°F | 56°F | 1.7" |
| May | 51°F | 69°F | 58°F | 0.3" |
| June | 54°F | 72°F | 61°F | 0.2" |
| July | 56°F | 73°F | 62°F | 0.0" |
| August | 56°F | 73°F | 62°F | 0.0" |
| September | 56°F | 76°F | 63°F | 0.1" |
| October | 54°F | 73°F | 62°F | 1.0" |
| November | 49°F | 65°F | 56°F | 1.7" |
| December | 44°F | 58°F | 51°F | 4.4" |
| Index | Bolinas | California | National |
| Air quality index | 43 | 55 | 42 |
| Pollution index | 8,232,360 | 10,473,190 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 252 |
| Days with moderate air quality | 101 |
| Days w/ poor A.Q. for sensitive groups | 10 |
| Days with unhealthy air quality | 2 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.010% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Point Reyes Station, CA | 210 | 34 | 32.0% |
| Black Point-Green Point, CA | 1,738 | 40 | 20.0% |
| Alto, CA | 818 | 40 | 20.0% |
| Larkspur, CA | 12,363 | 40 | 20.0% |
| Sausalito, CA | 7,177 | 40 | 20.0% |
| Bolinas, CA | 1,223 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Tubac, AZ | 1,223 | 31 | 38.0% |
| Crawford, GA | 1,223 | 44 | 12.0% |
| Branchville, SC | 1,223 | 29 | 42.0% |
| Maidstone, SK | 1,223 | n/a | |
| Pioneer, CA | 1,224 | 39 | 22.0% |
| Bolinas, CA | 1,223 | 43 | 14.0% |
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