| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 41°F | 59°F | 50°F | 2.8" |
| February | 45°F | 62°F | 53°F | 3.1" |
| March | 47°F | 65°F | 55°F | 2.9" |
| April | 49°F | 67°F | 57°F | 1.8" |
| May | 52°F | 69°F | 59°F | 0.4" |
| June | 54°F | 72°F | 62°F | 0.3" |
| July | 56°F | 73°F | 63°F | 0.0" |
| August | 57°F | 73°F | 63°F | 0.0" |
| September | 55°F | 76°F | 64°F | 0.1" |
| October | 52°F | 73°F | 61°F | 1.0" |
| November | 47°F | 65°F | 56°F | 1.9" |
| December | 42°F | 59°F | 50°F | 4.1" |
| Index | School | Oakland | California |
| Air quality index | 40 | 40 | 55 |
| Pollution index | 19,202,400 | 19,202,400 | 10,473,190 |
| 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 | 0.180% |
| Benzene | 0.140% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.280% |
| Mercury | 0.060% |
| City | Population | Air Quality Index | National Avg. |
| Alhambra Valley, CA | 1,051 | 40 | 20.0% |
| Lafayette, CA | 25,949 | 40 | 20.0% |
| Pacheco, CA | 4,775 | 40 | 20.0% |
| San Miguel CDP (San Luis Obispo County), CA | 2,696 | 40 | 20.0% |
| Ashland, CA | 23,566 | 40 | 20.0% |
| Oakland, CA | 422,575 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| London, ON | 421,456 | n/a | |
| Minneapolis, MN | 424,536 | 46 | 8.0% |
| Tulsa, OK | 402,441 | 45 | 10.0% |
| Laval, QC | 445,050 | n/a | |
| Arlington, TX | 397,269 | 51 | 2.0% |
| Oakland, CA | 422,575 | 40 | 20.0% |
Here are the best places to live in California
See the best places to live in Oakland
Check out the 10 most dangerous cities in California
These are the largest cities in California