| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | n/a°F | n/a°F | n/a°F | n/a |
| February | n/a°F | n/a°F | n/a°F | n/a |
| March | n/a°F | n/a°F | n/a°F | n/a |
| April | n/a°F | n/a°F | n/a°F | n/a |
| May | n/a°F | n/a°F | n/a°F | n/a |
| June | n/a°F | n/a°F | n/a°F | n/a |
| July | n/a°F | n/a°F | n/a°F | n/a |
| August | n/a°F | n/a°F | n/a°F | n/a |
| September | n/a°F | n/a°F | n/a°F | n/a |
| October | n/a°F | n/a°F | n/a°F | n/a |
| November | n/a°F | n/a°F | n/a°F | n/a |
| December | n/a°F | n/a°F | n/a°F | n/a |
| Index | Koosharem | Utah | National |
| Air quality index | 46 | 45 | 42 |
| Pollution index | 488,032 | 3,340,369 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 265 |
| Days with moderate air quality | 99 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.003% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Central Valley, UT | 776 | 46 | 8.0% |
| Fremont, UT | 105 | 46 | 8.0% |
| Elsinore, UT | 777 | 46 | 8.0% |
| Loa, UT | 680 | 46 | 8.0% |
| Monroe, UT | 2,389 | 46 | 8.0% |
| Koosharem, UT | 266 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Acampo, CA | 266 | 45 | 10.0% |
| Keene, CA | 266 | 67 | 34.0% |
| Yankee Hill, CA | 266 | 46 | 8.0% |
| Peetz, CO | 266 | 19 | 62.0% |
| Bovill, ID | 266 | 10 | 80.0% |
| Koosharem, UT | 266 | 46 | 8.0% |