| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 19°F | 35°F | 27°F | 1.8" |
| February | 26°F | 43°F | 34°F | 1.3" |
| March | 33°F | 55°F | 43°F | 1.7" |
| April | 38°F | 62°F | 49°F | 2.3" |
| May | 46°F | 72°F | 58°F | 2.5" |
| June | 55°F | 85°F | 70°F | 1.1" |
| July | 65°F | 94°F | 79°F | 0.3" |
| August | 63°F | 90°F | 76°F | 0.8" |
| September | 53°F | 80°F | 66°F | 1.5" |
| October | 42°F | 65°F | 52°F | 1.7" |
| November | 32°F | 52°F | 40°F | 1.1" |
| December | 22°F | 37°F | 29°F | 1.7" |
| Index | Liberty | Utah | National |
| Air quality index | 45 | 45 | 42 |
| Pollution index | 17,030,300 | 3,340,369 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 244 |
| Days with moderate air quality | 113 |
| Days w/ poor A.Q. for sensitive groups | 8 |
| 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. |
| Willard, UT | 1,688 | 44 | 12.0% |
| Mantua, UT | 1,017 | 44 | 12.0% |
| Avon, UT | 368 | 44 | 12.0% |
| Perry, UT | 5,090 | 44 | 12.0% |
| Brigham City, UT | 19,336 | 44 | 12.0% |
| Liberty, UT | 971 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Utica, IN | 971 | 49 | 2.0% |
| Caldwell, KS | 971 | 40 | 20.0% |
| Dollar Bay, MI | 971 | 8 | 84.0% |
| Poplar, MT | 971 | 34 | 32.0% |
| Pleasantville, OH | 971 | 46 | 8.0% |
| Liberty, UT | 971 | 45 | 10.0% |
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