| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 62°F | 46°F | 0.7" |
| February | 36°F | 69°F | 52°F | 0.3" |
| March | 42°F | 77°F | 59°F | 0.2" |
| April | 48°F | 84°F | 67°F | 0.1" |
| May | 56°F | 92°F | 75°F | 0.1" |
| June | 67°F | 103°F | 86°F | 0.3" |
| July | 73°F | 100°F | 86°F | 2.1" |
| August | 71°F | 98°F | 84°F | 1.3" |
| September | 64°F | 93°F | 78°F | 1.3" |
| October | 52°F | 85°F | 68°F | 0.7" |
| November | 42°F | 73°F | 57°F | 0.3" |
| December | 33°F | 61°F | 46°F | 0.6" |
| Index | San Carlos | Arizona | National |
| Air quality index | 44 | 57 | 42 |
| Pollution index | 3,235,590 | 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 | 0.070% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.050% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| Peridot, AZ | 1,416 | 44 | 12.0% |
| Rainbow City, AZ | 869 | 44 | 12.0% |
| Cutter, AZ | 151 | 60 | 20.0% |
| San Carlos, AZ | 4,555 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Ridge Manor, FL | 4,555 | 30 | 40.0% |
| Morgan's Point Resort, TX | 4,555 | 42 | 16.0% |
| Vilonia, AR | 4,556 | 45 | 10.0% |
| Kings Park, VA | 4,556 | 47 | 6.0% |
| Waterloo, QC | 4,553 | n/a | |
| San Carlos, AZ | 4,555 | 44 | 12.0% |
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