| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 72°F | 54°F | 0.7" |
| February | 43°F | 76°F | 59°F | 0.5" |
| March | 49°F | 84°F | 67°F | 0.1" |
| April | 55°F | 89°F | 72°F | 0.0" |
| May | 62°F | 96°F | 80°F | 0.0" |
| June | 69°F | 105°F | 89°F | 0.0" |
| July | 77°F | 109°F | 94°F | 0.1" |
| August | 75°F | 108°F | 93°F | 0.2" |
| September | 68°F | 103°F | 86°F | 0.4" |
| October | 57°F | 92°F | 75°F | 0.3" |
| November | 45°F | 81°F | 63°F | 0.1" |
| December | 37°F | 71°F | 53°F | 0.5" |
| Index | Mecca | California | National |
| Air quality index | 58 | 55 | 50 |
| Pollution index | 162,740 | 18,106,726 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 125 |
| Days with moderate air quality | 219 |
| Days w/ poor A.Q. for sensitive groups | 19 |
| Days with unhealthy air quality | 2 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.003% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| North Shore, CA | 3,199 | 58 | 16% |
| Thermal, CA | 2,396 | 58 | 16% |
| Oasis, CA | 4,374 | 58 | 16% |
| Coachella, CA | 43,826 | 58 | 16% |
| Vista Santa Rosa, CA | 3,775 | 58 | 16% |
| Mecca, CA | 8,863 | 58 | 16% |
| City, State | Population | Air Quality Index | National Avg. |
| Selma, TX | 8,866 | 49 | 2% |
| Kulpsville, PA | 8,859 | 51 | 2% |
| Molalla, OR | 8,867 | 32 | 36% |
| Moundsville, WV | 8,858 | 39 | 22% |
| Quakertown, PA | 8,869 | 42 | 16% |
| Mecca, CA | 8,863 | 58 | 16% |
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