| 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 | Cedar Ridge | California | National |
| Air quality index | 39 | 55 | 42 |
| Pollution index | 2,624,520 | 10,473,190 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 331 |
| Days with moderate air quality | 33 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.070% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Vallecito, CA | 132 | 39 | 22.0% |
| Long Barn, CA | 88 | 39 | 22.0% |
| Arnold, CA | 2,099 | 39 | 22.0% |
| East Sonora, CA | 2,672 | 39 | 22.0% |
| Mountain Ranch, CA | 318 | 39 | 22.0% |
| Cedar Ridge, CA | 1,267 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| Bradford Woods, PA | 1,267 | 56 | 12.0% |
| Wagener, SC | 1,267 | 43 | 14.0% |
| Rupert, WV | 1,267 | 295 | 490.0% |
| Quinebaug, CT | 1,266 | 40 | 20.0% |
| Grace, ID | 1,266 | 27 | 46.0% |
| Cedar Ridge, CA | 1,267 | 39 | 22.0% |
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