| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 61°F | 46°F | 1.2" |
| February | 36°F | 66°F | 50°F | 0.5" |
| March | 41°F | 72°F | 57°F | 0.4" |
| April | 45°F | 77°F | 62°F | 0.3" |
| May | 51°F | 84°F | 69°F | 0.1" |
| June | 63°F | 94°F | 79°F | 0.2" |
| July | 65°F | 90°F | 76°F | 3.1" |
| August | 64°F | 88°F | 75°F | 2.5" |
| September | 59°F | 86°F | 72°F | 2.2" |
| October | 51°F | 81°F | 65°F | 0.5" |
| November | 42°F | 70°F | 55°F | 0.3" |
| December | 35°F | 62°F | 47°F | 0.8" |
| Index | Elgin | Arizona | National |
| Air quality index | 45 | 57 | 42 |
| Pollution index | 4,063,380 | 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 | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Patagonia, AZ | 823 | 31 | 38.0% |
| Sonoita, AZ | 727 | 45 | 10.0% |
| Whetstone, AZ | 2,995 | 45 | 10.0% |
| Huachuca City, AZ | 1,954 | 45 | 10.0% |
| Elgin, AZ | 168 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Marshall, AK | 168 | 31 | 38.0% |
| Sedgwick, AR | 168 | 45 | 10.0% |
| La Junta Gardens, CO | 168 | 20 | 60.0% |
| Makena, HI | 168 | 15 | 70.0% |
| Smithland, IA | 168 | 35 | 30.0% |
| Elgin, AZ | 168 | 45 | 10.0% |
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