| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 55°F | 75°F | 65°F | 1.7" |
| February | 51°F | 75°F | 63°F | 2.4" |
| March | 58°F | 78°F | 68°F | 5.3" |
| April | 58°F | 81°F | 70°F | 8.9" |
| May | 67°F | 84°F | 76°F | 6.5" |
| June | 72°F | 87°F | 79°F | 10.4" |
| July | 74°F | 90°F | 82°F | 11.4" |
| August | 74°F | 91°F | 82°F | 5.5" |
| September | 73°F | 88°F | 80°F | 5.3" |
| October | 72°F | 85°F | 78°F | 8.0" |
| November | 62°F | 79°F | 70°F | 6.0" |
| December | 56°F | 76°F | 66°F | 7.8" |
| Index | Port St. Lucie | Florida | National |
| Air quality index | 36 | 35 | 42 |
| Pollution index | 30,648,300 | 7,570,785 | 2,726,193 |
| Measurement | Total |
| Days measured | 353 |
| Days with good air quality | 324 |
| Days with moderate air quality | 29 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.040% |
| Benzene | 0.370% |
| Carbon Tetrachloride | 0.080% |
| Lead | 0.150% |
| Mercury | 0.030% |
| City | Population | Air Quality Index | National Avg. |
| Hutchinson Island South, FL | 5,025 | 36 | 28.0% |
| Ocean Breeze Park, FL | 214 | 36 | 28.0% |
| River Park, FL | 7,139 | 36 | 28.0% |
| Fort Pierce North, FL | 7,199 | 36 | 28.0% |
| Indian River Estates, FL | 6,542 | 36 | 28.0% |
| Port St. Lucie, FL | 195,773 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Columbus, GA | 195,418 | 42 | 16.0% |
| Akron, OH | 197,375 | 43 | 14.0% |
| Burlington, ON | 197,435 | n/a | |
| Augusta, GA | 197,535 | 47 | 6.0% |
| Grand Prairie, TX | 193,835 | 51 | 2.0% |
| Port St. Lucie, FL | 195,773 | 36 | 28.0% |
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