| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 51°F | 76°F | 62°F | 2.3" |
| February | 52°F | 77°F | 64°F | 2.0" |
| March | 55°F | 81°F | 68°F | 2.5" |
| April | 61°F | 86°F | 73°F | 2.0" |
| May | 65°F | 90°F | 77°F | 2.6" |
| June | 72°F | 92°F | 81°F | 9.1" |
| July | 74°F | 92°F | 81°F | 8.2" |
| August | 75°F | 92°F | 82°F | 9.5" |
| September | 73°F | 91°F | 80°F | 7.0" |
| October | 67°F | 87°F | 76°F | 2.8" |
| November | 58°F | 82°F | 68°F | 1.3" |
| December | 55°F | 79°F | 66°F | 1.4" |
| Index | Rotonda | Florida | National |
| Air quality index | 36 | 35 | 42 |
| Pollution index | 58,201,700 | 7,570,785 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 328 |
| Days with moderate air quality | 36 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 1.330% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| North Port, FL | 68,779 | 36 | 28.0% |
| Warm Mineral Springs, FL | 5,267 | 36 | 28.0% |
| Charlotte Park, FL | 1,893 | 36 | 28.0% |
| Bokeelia, FL | 1,536 | 36 | 28.0% |
| Port Charlotte, FL | 64,335 | 36 | 28.0% |
| Rotonda, FL | 10,117 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Linthicum, MD | 10,116 | 46 | 8.0% |
| Saint-Hippolyte, QC | 10,115 | n/a | |
| Orange Cove, CA | 10,120 | 66 | 32.0% |
| Highland, IL | 10,122 | 54 | 8.0% |
| Meadowbrook, AL | 10,110 | 53 | 6.0% |
| Rotonda, FL | 10,117 | 36 | 28.0% |
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