| 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. |
| Lehi, UT | 66,980 | 46 | 8.0% |
| Cedar Fort, UT | 212 | 46 | 8.0% |
| Eagle Mountain, UT | 35,431 | 46 | 8.0% |
| Saratoga Springs, UT | 31,273 | 46 | 8.0% |
| Stockton, UT | 1,072 | 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
Most Dangerous Cities In The US
See the best places to live in Fairfield
Check out the 10 most dangerous cities in Utah