| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 63°F | 48°F | 0.7" |
| February | 40°F | 68°F | 53°F | 0.5" |
| March | 46°F | 75°F | 60°F | 0.2" |
| April | 51°F | 82°F | 65°F | 0.2" |
| May | 59°F | 91°F | 74°F | 0.0" |
| June | 68°F | 102°F | 85°F | 0.0" |
| July | 75°F | 107°F | 91°F | 0.2" |
| August | 73°F | 105°F | 89°F | 0.3" |
| September | 66°F | 97°F | 81°F | 0.1" |
| October | 54°F | 85°F | 68°F | 0.2" |
| November | 43°F | 72°F | 56°F | 0.3" |
| December | 35°F | 61°F | 47°F | 0.7" |
| Index | Lucerne Valley | California | National |
| Air quality index | 89 | 55 | 50 |
| Pollution index | 31,575,300 | 18,106,726 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 42 |
| Days with moderate air quality | 178 |
| Days w/ poor A.Q. for sensitive groups | 79 |
| Days with unhealthy air quality | 58 |
| Pollutant | Total |
| Arsenic | 0.110% |
| Benzene | 0.260% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.350% |
| Mercury | 0.280% |
| City, State | Population | Air Quality Index | National Avg. |
| Big Bear City, CA | 13,859 | 89 | 78% |
| Lake Arrowhead, CA | 11,307 | 89 | 78% |
| Big Bear Lake, CA | 5,149 | 89 | 78% |
| Apple Valley, CA | 71,455 | 89 | 78% |
| Lucerne Valley, CA | 5,263 | 89 | 78% |
| City, State | Population | Air Quality Index | National Avg. |
| Williamsburg, KY | 5,263 | 39 | 22% |
| Gray, LA | 5,262 | 41 | 18% |
| DeWitt, IA | 5,264 | 42 | 16% |
| Shillington, PA | 5,265 | 42 | 16% |
| Keyser, WV | 5,261 | 36 | 28% |
| Lucerne Valley, CA | 5,263 | 89 | 78% |
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