| 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 | Payson | Utah | National |
| Air quality index | 46 | 45 | 42 |
| Pollution index | 688,749 | 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 | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Lake Shore, UT | 1,020 | 46 | 8.0% |
| Spanish Fork, UT | 40,069 | 46 | 8.0% |
| Elberta, UT | 318 | 46 | 8.0% |
| Rocky Ridge, UT | 1,069 | 46 | 8.0% |
| Mapleton, UT | 10,270 | 46 | 8.0% |
| Payson, UT | 20,181 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Nogales, AZ | 20,182 | 31 | 38.0% |
| Mountain Brook, AL | 20,178 | 53 | 6.0% |
| Kinston, NC | 20,173 | 42 | 16.0% |
| Kirkland, QC | 20,189 | n/a | |
| La Crescenta-Montrose, CA | 20,171 | 72 | 44.0% |
| Payson, UT | 20,181 | 46 | 8.0% |
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