| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 33°F | 25°F | 3.9" |
| February | 24°F | 43°F | 32°F | 2.5" |
| March | 33°F | 55°F | 43°F | 2.5" |
| April | 38°F | 62°F | 49°F | 2.5" |
| May | 45°F | 71°F | 58°F | 3.1" |
| June | 54°F | 85°F | 70°F | 3.6" |
| July | 62°F | 92°F | 77°F | 1.9" |
| August | 60°F | 89°F | 74°F | 2.7" |
| September | 50°F | 79°F | 64°F | 4.4" |
| October | 39°F | 64°F | 51°F | 3.2" |
| November | 30°F | 51°F | 39°F | 2.0" |
| December | 21°F | 36°F | 28°F | 2.2" |
| Index | Fairfield | Utah | National |
| Air quality index | 46 | 45 | 42 |
| Pollution index | 17,030,300 | 3,340,369 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 253 |
| Days with moderate air quality | 111 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.280% |
| Benzene | 0.230% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.360% |
| Mercury | 0.040% |
| City | Population | Air Quality Index | National Avg. |
| Eagle Mountain, UT | 35,431 | 46 | 8.0% |
| Saratoga Springs, UT | 31,273 | 46 | 8.0% |
| Lehi, UT | 66,980 | 46 | 8.0% |
| Cedar Fort, UT | 212 | 46 | 8.0% |
| Independence, UT | 143 | 51 | 2.0% |
| Fairfield, UT | 81 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Blue Eye, AR | 81 | 18 | 64.0% |
| Nimmons, AR | 81 | 26 | 48.0% |
| Roe, AR | 81 | 45 | 10.0% |
| Kirk, CO | 81 | 58 | 16.0% |
| Oto, IA | 81 | 35 | 30.0% |
| Fairfield, UT | 81 | 46 | 8.0% |
Here are the best places to live in Utah
Check out the 10 safest cities in Utah
Check out the 10 most dangerous cities in Utah
These are the largest cities in Utah