| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 35°F | 59°F | 46°F | 1.8" |
| February | 40°F | 65°F | 52°F | 1.8" |
| March | 47°F | 74°F | 60°F | 0.9" |
| April | 53°F | 81°F | 66°F | 1.6" |
| May | 61°F | 90°F | 76°F | 1.2" |
| June | 73°F | 102°F | 88°F | 1.7" |
| July | 80°F | 106°F | 93°F | 2.1" |
| August | 77°F | 103°F | 90°F | 3.0" |
| September | 68°F | 96°F | 82°F | 2.5" |
| October | 56°F | 83°F | 68°F | 2.0" |
| November | 44°F | 70°F | 56°F | 1.8" |
| December | 35°F | 57°F | 45°F | 2.7" |
| Index | Mission Hills | Henderson | Nevada |
| Air quality index | 54 | 54 | 38 |
| Pollution index | 5,460,430 | 5,460,430 | 4,261,773 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 157 |
| Days with moderate air quality | 192 |
| Days w/ poor A.Q. for sensitive groups | 15 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.040% |
| Mercury | 0.001% |
| City, State | Population | Air Quality Index | National Avg. |
| Boulder City, NV | 15,373 | 54 | 8% |
| Whitney, NV | 41,124 | 54 | 8% |
| Las Vegas, NV | 613,295 | 54 | 8% |
| Winchester, NV | 27,986 | 54 | 8% |
| North Las Vegas, NV | 230,436 | 54 | 8% |
| Henderson, NV | 277,872 | 54 | 8% |
| City, State | Population | Air Quality Index | National Avg. |
| Plano, TX | 279,088 | 54 | 8% |
| Newark, NJ | 280,139 | 53 | 6% |
| Toledo, OH | 280,854 | 36 | 28% |
| Greensboro, NC | 282,177 | 38 | 24% |
| Lincoln, NE | 273,018 | 34 | 32% |
| Henderson, NV | 277,872 | 54 | 8% |