| 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 | Brisbane | California | National |
| Air quality index | 40 | 55 | 42 |
| Pollution index | 8,232,360 | 10,473,190 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 290 |
| Days with moderate air quality | 74 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| 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. |
| Moraga, CA | 16,896 | 40 | 20.0% |
| Daly City, CA | 107,197 | 40 | 20.0% |
| Belvedere, CA | 2,246 | 40 | 20.0% |
| Strawberry, CA | 5,325 | 40 | 20.0% |
| Albany, CA | 20,145 | 40 | 20.0% |
| Brisbane, CA | 4,645 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Pittsburg, TX | 4,645 | 37 | 26.0% |
| Saint-Étienne-des-Grès, QC | 4,645 | n/a | |
| Warwick, QC | 4,646 | n/a | |
| Saint-Denis-de-Brompton, QC | 4,642 | n/a | |
| Woodlands County, AB | 4,642 | n/a | |
| Brisbane, CA | 4,645 | 40 | 20.0% |
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