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				| 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 | El Cerrito | California | National | 
| Air quality index | 40 | 55 | 42 | 
| Pollution index | 19,202,400 | 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 | 0.180% | 
| Benzene | 0.140% | 
| Carbon Tetrachloride | 0.010% | 
| Lead | 0.280% | 
| Mercury | 0.060% | 
| City | Population | Air Quality Index | National Avg. | 
| Contra Costa Centre, CA | 6,667 | 40 | 20.0% | 
| Pacheco, CA | 4,775 | 40 | 20.0% | 
| San Miguel CDP (San Luis Obispo County), CA | 2,696 | 40 | 20.0% | 
| Castro Valley, CA | 64,392 | 40 | 20.0% | 
| Alameda, CA | 79,827 | 40 | 20.0% | 
| El Cerrito, CA | 25,280 | 40 | 20.0% | 
| City | Population | Air Quality Index | National Avg. | 
| Franklin, IN | 25,276 | 54 | 8.0% | 
| Suitland, MD | 25,273 | 47 | 6.0% | 
| Prince Edward County, ON | 25,289 | n/a | |
| Clinton, IA | 25,290 | 42 | 16.0% | 
| Mount Pleasant, MI | 25,290 | 26 | 48.0% | 
| El Cerrito, CA | 25,280 | 40 | 20.0% |