| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 43°F | 67°F | 54°F | 1.1" |
| February | 46°F | 71°F | 58°F | 0.6" |
| March | 51°F | 78°F | 65°F | 0.8" |
| April | 56°F | 85°F | 71°F | 0.3" |
| May | 64°F | 93°F | 79°F | 0.2" |
| June | 74°F | 104°F | 90°F | 0.0" |
| July | 82°F | 105°F | 93°F | 0.8" |
| August | 80°F | 104°F | 92°F | 1.3" |
| September | 74°F | 98°F | 86°F | 1.0" |
| October | 63°F | 88°F | 75°F | 0.3" |
| November | 52°F | 77°F | 64°F | 0.4" |
| December | 43°F | 65°F | 53°F | 1.2" |
| Index | Carefree | Arizona | National |
| Air quality index | 74 | 57 | 42 |
| Pollution index | 4,063,380 | 9,766,019 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 50 |
| Days with moderate air quality | 261 |
| Days w/ poor A.Q. for sensitive groups | 42 |
| Days with unhealthy air quality | 2 |
| 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. |
| Anthem, AZ | 23,508 | 74 | 48.0% |
| Fountain Hills, AZ | 25,167 | 74 | 48.0% |
| Cave Creek, AZ | 5,766 | 74 | 48.0% |
| Rio Verde, AZ | 2,327 | 74 | 48.0% |
| New River, AZ | 16,303 | 74 | 48.0% |
| Carefree, AZ | 3,863 | 74 | 48.0% |
| City | Population | Air Quality Index | National Avg. |
| Hopkinton, MA | 3,864 | 40 | 20.0% |
| Forks, WA | 3,864 | 34 | 32.0% |
| Beaupré, QC | 3,861 | n/a | |
| Valdez, AK | 3,865 | 31 | 38.0% |
| Ridgecrest, FL | 3,865 | 43 | 14.0% |
| Carefree, AZ | 3,863 | 74 | 48.0% |
Here are the best places to live in Arizona
See the best places to live in Carefree
Check out the 10 safest cities in Arizona
These are the 10 cheapest cities in Arizona