| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 59°F | 76°F | 67°F | 4.2" |
| February | 60°F | 78°F | 68°F | 6.2" |
| March | 63°F | 80°F | 71°F | 6.1" |
| April | 68°F | 83°F | 75°F | 9.3" |
| May | 71°F | 86°F | 78°F | 12.7" |
| June | 75°F | 89°F | 81°F | 11.0" |
| July | 76°F | 89°F | 82°F | 10.6" |
| August | 77°F | 90°F | 83°F | 10.5" |
| September | 76°F | 89°F | 81°F | 10.0" |
| October | 72°F | 85°F | 78°F | 9.1" |
| November | 66°F | 81°F | 73°F | 5.2" |
| December | 64°F | 79°F | 71°F | 7.1" |
| Index | Princeton | Florida | National |
| Air quality index | 41 | 35 | 42 |
| Pollution index | 43,296,200 | 7,570,785 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 284 |
| Days with moderate air quality | 77 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.060% |
| Benzene | 0.510% |
| Carbon Tetrachloride | 0.150% |
| Lead | 0.330% |
| Mercury | 0.090% |
| City | Population | Air Quality Index | National Avg. |
| West Miami, FL | 8,393 | 41 | 18.0% |
| Key Biscayne, FL | 13,140 | 41 | 18.0% |
| Homestead Base, FL | 748 | 41 | 18.0% |
| Naranja, FL | 12,720 | 41 | 18.0% |
| South Miami Heights, FL | 36,522 | 41 | 18.0% |
| Princeton, FL | 36,609 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| West Hollywood, CA | 36,619 | 72 | 44.0% |
| Watertown Town, MA | 36,568 | 43 | 14.0% |
| Mount Vernon, WA | 36,653 | 24 | 52.0% |
| Peachtree City, GA | 36,655 | 52 | 4.0% |
| Olney, MD | 36,549 | 47 | 6.0% |
| Princeton, FL | 36,609 | 41 | 18.0% |