| 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 | Clinton | 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. |
| Clearfield, UT | 31,622 | 45 | 10.0% |
| Sunset, UT | 5,309 | 45 | 10.0% |
| Harrisville, UT | 6,637 | 45 | 10.0% |
| North Ogden, UT | 19,930 | 45 | 10.0% |
| Riverdale, UT | 8,826 | 45 | 10.0% |
| Clinton, UT | 22,191 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Hayesville, OR | 22,189 | 32 | 36.0% |
| Maple Heights, OH | 22,178 | 50 | = 100 |
| Belton, TX | 22,173 | 42 | 16.0% |
| Mustang, OK | 22,228 | 48 | 4.0% |
| Fort Walton Beach, FL | 22,144 | 31 | 38.0% |
| Clinton, UT | 22,191 | 45 | 10.0% |
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