| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 38°F | 28°F | 1.3" |
| February | 27°F | 47°F | 36°F | 1.1" |
| March | 33°F | 58°F | 45°F | 1.8" |
| April | 38°F | 64°F | 51°F | 2.4" |
| May | 46°F | 74°F | 60°F | 2.0" |
| June | 57°F | 88°F | 72°F | 0.9" |
| July | 67°F | 96°F | 82°F | 0.5" |
| August | 64°F | 93°F | 79°F | 0.7" |
| September | 54°F | 83°F | 68°F | 1.3" |
| October | 42°F | 68°F | 54°F | 1.2" |
| November | 32°F | 54°F | 42°F | 1.2" |
| December | 22°F | 40°F | 30°F | 1.6" |
| Index | Downtown | Salt Lake City | Utah |
| Air quality index | 47 | 47 | 45 |
| Pollution index | 17,030,300 | 17,030,300 | 6,755,121 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 223 |
| Days with moderate air quality | 97 |
| Days w/ poor A.Q. for sensitive groups | 36 |
| Days with unhealthy air quality | 9 |
| Pollutant | Total |
| Arsenic | 0.280% |
| Benzene | 0.230% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.360% |
| Mercury | 0.040% |
| City, State | Population | Air Quality Index | National Avg. |
| Alta, UT | 349 | 47 | 6% |
| Cottonwood Heights, UT | 34,274 | 47 | 6% |
| Kearns, UT | 36,952 | 47 | 6% |
| Murray, UT | 48,834 | 47 | 6% |
| South Salt Lake, UT | 24,575 | 47 | 6% |
| Salt Lake City, UT | 191,446 | 47 | 6% |
| City, State | Population | Air Quality Index | National Avg. |
| Spring Valley, NV | 190,661 | 54 | 8% |
| Sunrise Manor, NV | 192,873 | 54 | 8% |
| Mobile, AL | 193,717 | 31 | 38% |
| Grand Rapids, MI | 193,887 | 39 | 22% |
| Huntsville, AL | 188,973 | 37 | 26% |
| Salt Lake City, UT | 191,446 | 47 | 6% |