| 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 | Round Rock | Arizona | National |
| Air quality index | 49 | 57 | 42 |
| Pollution index | 37,658,000 | 9,766,019 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 208 |
| Days with moderate air quality | 157 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.210% |
| Benzene | 0.750% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.080% |
| Mercury | 0.180% |
| City | Population | Air Quality Index | National Avg. |
| Tsaile, AZ | 1,389 | 17 | 66.0% |
| Many Farms, AZ | 897 | 17 | 66.0% |
| Rock Point, AZ | 548 | 49 | 2.0% |
| Lukachukai, AZ | 1,838 | 49 | 2.0% |
| Round Rock, AZ | 796 | 49 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Nelson, AZ | 796 | 47 | 6.0% |
| Dover, ID | 796 | 43 | 14.0% |
| Raymond, MN | 796 | 32 | 36.0% |
| Oxford, NE | 796 | 19 | 62.0% |
| Beaver Springs, PA | 796 | 44 | 12.0% |
| Round Rock, AZ | 796 | 49 | 2.0% |