| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 47°F | 29°F | 6.0" |
| February | 17°F | 49°F | 31°F | 4.1" |
| March | 24°F | 55°F | 38°F | 5.0" |
| April | 27°F | 59°F | 42°F | 2.7" |
| May | 32°F | 65°F | 49°F | 1.0" |
| June | 40°F | 78°F | 60°F | 1.8" |
| July | 43°F | 83°F | 65°F | 1.1" |
| August | 41°F | 82°F | 63°F | 3.1" |
| September | 36°F | 79°F | 57°F | 1.2" |
| October | 28°F | 64°F | 45°F | 5.8" |
| November | 20°F | 52°F | 34°F | 3.7" |
| December | 15°F | 42°F | 27°F | 6.2" |
| Index | Bridgeport | California | National |
| Air quality index | 13 | 55 | 42 |
| Pollution index | 117,012 | 10,473,190 | 2,726,193 |
| Measurement | Total |
| Days measured | 356 |
| Days with good air quality | 346 |
| Days with moderate air quality | 10 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Mono City, CA | 135 | 47 | 6.0% |
| Bridgeport, CA | 509 | 13 | 74.0% |
| City | Population | Air Quality Index | National Avg. |
| Napier Field, AL | 509 | 35 | 30.0% |
| Bonanza, AR | 509 | 36 | 28.0% |
| Davenport, CA | 509 | 35 | 30.0% |
| Falls Village, CT | 509 | 37 | 26.0% |
| Ohio, IL | 509 | 0 | 100.0% |
| Bridgeport, CA | 509 | 13 | 74.0% |
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