| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 54°F | 74°F | 63°F | 3.5" |
| February | 52°F | 73°F | 62°F | 9.5" |
| March | 57°F | 77°F | 67°F | 5.8" |
| April | 59°F | 79°F | 69°F | 10.2" |
| May | 67°F | 85°F | 76°F | 5.4" |
| June | 73°F | 88°F | 80°F | 11.5" |
| July | 75°F | 91°F | 83°F | 11.1" |
| August | 76°F | 92°F | 83°F | 8.3" |
| September | 74°F | 90°F | 81°F | 3.6" |
| October | 70°F | 87°F | 77°F | 10.7" |
| November | 60°F | 80°F | 69°F | 5.9" |
| December | 55°F | 75°F | 64°F | 1.7" |
| Index | Siesta Key | Florida | National |
| Air quality index | 38 | 35 | 42 |
| Pollution index | 18,829,900 | 7,570,785 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 308 |
| Days with moderate air quality | 56 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.050% |
| Benzene | 0.220% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.130% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| Longboat Key, FL | 7,299 | 38 | 24.0% |
| South Bradenton, FL | 24,885 | 38 | 24.0% |
| Bee Ridge, FL | 10,283 | 38 | 24.0% |
| Laurel, FL | 12,153 | 38 | 24.0% |
| Sarasota Springs, FL | 13,053 | 38 | 24.0% |
| Siesta Key, FL | 5,587 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Falcon Heights, MN | 5,586 | 46 | 8.0% |
| Henryetta, OK | 5,586 | 43 | 14.0% |
| Willow Park, TX | 5,585 | 33 | 34.0% |
| Cresaptown, MD | 5,584 | 36 | 28.0% |
| Paoli, PA | 5,591 | 51 | 2.0% |
| Siesta Key, FL | 5,587 | 38 | 24.0% |
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