| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 62°F | 46°F | 2.3" |
| February | 37°F | 65°F | 50°F | 1.6" |
| March | 39°F | 72°F | 55°F | 3.5" |
| April | 44°F | 79°F | 62°F | 1.5" |
| May | 53°F | 88°F | 72°F | 4.0" |
| June | 61°F | 96°F | 80°F | 0.7" |
| July | 67°F | 95°F | 80°F | 8.1" |
| August | 65°F | 89°F | 75°F | 5.5" |
| September | 60°F | 90°F | 75°F | 1.2" |
| October | 50°F | 83°F | 66°F | 4.7" |
| November | 41°F | 77°F | 58°F | 1.2" |
| December | 32°F | 65°F | 47°F | 5.9" |
| Index | Arivaca | Arizona | National |
| Air quality index | 31 | 57 | 42 |
| Pollution index | 4,063,380 | 9,766,019 | 2,726,193 |
| Measurement | Total |
| Days measured | 362 |
| Days with good air quality | 280 |
| Days with moderate air quality | 80 |
| 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. |
| Arivaca, AZ | 692 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Aroma Park, IL | 692 | 55 | 10.0% |
| Union, LA | 692 | 45 | 10.0% |
| Camden, MI | 692 | 39 | 22.0% |
| Stewartsville, MO | 692 | 43 | 14.0% |
| West Winfield, NY | 692 | 27 | 46.0% |
| Arivaca, AZ | 692 | 31 | 38.0% |
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