| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 19°F | 52°F | 34°F | 0.7" |
| February | 24°F | 59°F | 40°F | 0.5" |
| March | 30°F | 68°F | 48°F | 0.3" |
| April | 35°F | 75°F | 55°F | 0.2" |
| May | 44°F | 83°F | 64°F | 0.3" |
| June | 54°F | 95°F | 76°F | 0.1" |
| July | 63°F | 97°F | 79°F | 1.1" |
| August | 61°F | 93°F | 76°F | 1.5" |
| September | 52°F | 87°F | 69°F | 0.7" |
| October | 39°F | 77°F | 57°F | 0.4" |
| November | 27°F | 64°F | 44°F | 0.5" |
| December | 20°F | 52°F | 35°F | 0.6" |
| Index | Holbrook | Arizona | National |
| Air quality index | 44 | 57 | 42 |
| Pollution index | 3,112,090 | 9,766,019 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 294 |
| Days with moderate air quality | 70 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.000% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Joseph City, AZ | 1,950 | 44 | 12.0% |
| Sun Valley, AZ | 96 | 44 | 12.0% |
| Woodruff, AZ | 76 | 44 | 12.0% |
| Holbrook, AZ | 5,197 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Concordia, KS | 5,197 | 32 | 36.0% |
| Chestertown, MD | 5,197 | 46 | 8.0% |
| Grand Falls / Grand-Sault, NB | 5,197 | n/a | |
| Utica, MI | 5,196 | 56 | 12.0% |
| Montevideo, MN | 5,198 | 32 | 36.0% |
| Holbrook, AZ | 5,197 | 44 | 12.0% |