| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 65°F | 45°F | 0.6" |
| February | 31°F | 70°F | 50°F | 0.2" |
| March | 38°F | 77°F | 58°F | 0.2" |
| April | 42°F | 82°F | 64°F | 0.1" |
| May | 49°F | 88°F | 70°F | 0.1" |
| June | 61°F | 100°F | 82°F | 0.4" |
| July | 66°F | 94°F | 78°F | 4.9" |
| August | 64°F | 93°F | 77°F | 3.2" |
| September | 59°F | 90°F | 74°F | 1.4" |
| October | 47°F | 85°F | 66°F | 0.3" |
| November | 35°F | 73°F | 54°F | 0.3" |
| December | 29°F | 65°F | 46°F | 0.5" |
| Index | Elfrida | Arizona | National |
| Air quality index | 45 | 57 | 42 |
| Pollution index | 3,438,690 | 9,766,019 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 266 |
| Days with moderate air quality | 99 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.004% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.040% |
| Mercury | 0.003% |
| City | Population | Air Quality Index | National Avg. |
| McNeal, AZ | 243 | 45 | 10.0% |
| Sunizona, AZ | 247 | 45 | 10.0% |
| Elfrida, AZ | 293 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Harding-Birch Lakes, AK | 293 | 38 | 24.0% |
| Lower Kalskag, AK | 293 | 31 | 38.0% |
| Heath, AL | 293 | 35 | 30.0% |
| Clear Creek, CA | 293 | 46 | 8.0% |
| Monterey Park Tract, CA | 293 | 49 | 2.0% |
| Elfrida, AZ | 293 | 45 | 10.0% |
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