| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 38°F | 28°F | 1.3" |
| February | 27°F | 47°F | 36°F | 1.1" |
| March | 33°F | 58°F | 45°F | 1.8" |
| April | 38°F | 64°F | 51°F | 2.4" |
| May | 46°F | 74°F | 60°F | 2.0" |
| June | 57°F | 88°F | 72°F | 0.9" |
| July | 67°F | 96°F | 82°F | 0.5" |
| August | 64°F | 93°F | 79°F | 0.7" |
| September | 54°F | 83°F | 68°F | 1.3" |
| October | 42°F | 68°F | 54°F | 1.2" |
| November | 32°F | 54°F | 42°F | 1.2" |
| December | 22°F | 40°F | 30°F | 1.6" |
| Index | Sandy | Utah | National |
| Air quality index | 51 | 45 | 42 |
| Pollution index | 17,030,300 | 3,340,369 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 170 |
| Days with moderate air quality | 178 |
| Days w/ poor A.Q. for sensitive groups | 17 |
| 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. |
| American Fork, UT | 31,636 | 46 | 8.0% |
| Cedar Hills, UT | 10,190 | 46 | 8.0% |
| Lehi, UT | 66,980 | 46 | 8.0% |
| Highland, UT | 19,012 | 46 | 8.0% |
| Pleasant Grove, UT | 38,474 | 46 | 8.0% |
| Sandy, UT | 96,137 | 51 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| San Marcos, CA | 96,219 | 64 | 28.0% |
| Brossard, QC | 96,033 | n/a | |
| Pickering, ON | 96,267 | n/a | |
| Flint, MI | 95,999 | 38 | 24.0% |
| Longmont, CO | 95,864 | 47 | 6.0% |
| Sandy, UT | 96,137 | 51 | 2.0% |
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