| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 52°F | 72°F | 61°F | 2.9" |
| February | 54°F | 73°F | 63°F | 2.4" |
| March | 59°F | 78°F | 68°F | 2.5" |
| April | 65°F | 83°F | 74°F | 2.3" |
| May | 70°F | 88°F | 78°F | 2.7" |
| June | 75°F | 90°F | 82°F | 9.4" |
| July | 76°F | 91°F | 83°F | 9.2" |
| August | 77°F | 91°F | 83°F | 9.7" |
| September | 76°F | 90°F | 81°F | 6.4" |
| October | 69°F | 85°F | 76°F | 2.0" |
| November | 60°F | 78°F | 68°F | 1.1" |
| December | 58°F | 76°F | 65°F | 1.3" |
| Index | Dunedin | Florida | National |
| Air quality index | 43 | 35 | 50 |
| Pollution index | 966,644 | 15,391,344 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 267 |
| Days with moderate air quality | 92 |
| Days w/ poor A.Q. for sensitive groups | 6 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.004% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| Belleair, FL | 3,958 | 43 | 14% |
| East Lake, FL | 32,046 | 43 | 14% |
| Indian Rocks Beach, FL | 4,213 | 43 | 14% |
| Redington Beach, FL | 1,489 | 43 | 14% |
| Seminole, FL | 17,906 | 43 | 14% |
| Dunedin, FL | 35,882 | 43 | 14% |
| City, State | Population | Air Quality Index | National Avg. |
| Pahrump, NV | 35,899 | 15 | 70% |
| Richfield, MN | 35,912 | 46 | 8% |
| Merritt Island, FL | 35,916 | 36 | 28% |
| Goldsboro, NC | 35,924 | 40 | 20% |
| Bell, CA | 35,927 | 72 | 44% |
| Dunedin, FL | 35,882 | 43 | 14% |
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