| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 69°F | 52°F | 1.0" |
| February | 42°F | 73°F | 56°F | 0.8" |
| March | 47°F | 80°F | 63°F | 0.5" |
| April | 52°F | 86°F | 69°F | 0.2" |
| May | 60°F | 93°F | 78°F | 0.1" |
| June | 71°F | 104°F | 88°F | 0.3" |
| July | 76°F | 101°F | 88°F | 3.3" |
| August | 74°F | 100°F | 86°F | 2.0" |
| September | 69°F | 96°F | 82°F | 1.5" |
| October | 58°F | 89°F | 73°F | 0.4" |
| November | 48°F | 79°F | 62°F | 0.4" |
| December | 39°F | 69°F | 52°F | 1.1" |
| Index | Nelson | Arizona | National |
| Air quality index | 47 | 57 | 42 |
| Pollution index | 4,063,380 | 9,766,019 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 225 |
| Days with moderate air quality | 138 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.004% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.040% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Casas Adobes, AZ | 70,516 | 47 | 6.0% |
| Rillito, AZ | 0 | 47 | 6.0% |
| Marana, AZ | 47,164 | 47 | 6.0% |
| Flowing Wells, AZ | 17,227 | 47 | 6.0% |
| Red Rock CDP (Apache County), AZ | 174 | 47 | 6.0% |
| Nelson, AZ | 775 | 47 | 6.0% |
| City | Population | Air Quality Index | National Avg. |
| Hoffman, IL | 775 | 43 | 14.0% |
| West Concord, MN | 775 | 36 | 28.0% |
| Shawnee Hills village, OH | 775 | 43 | 14.0% |
| Wallowa, OR | 775 | 20 | 60.0% |
| Everson, PA | 775 | 36 | 28.0% |
| Nelson, AZ | 775 | 47 | 6.0% |
Here are the best places to live in Arizona
Top 10 cities in Arizona with the best education system
These are the 10 most affordable cities in Arizona
See the best places to live in & around Nelson