| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 49°F | 71°F | 59°F | 2.3" |
| February | 50°F | 73°F | 61°F | 2.4" |
| March | 56°F | 78°F | 66°F | 2.5" |
| April | 62°F | 84°F | 72°F | 2.2" |
| May | 68°F | 89°F | 77°F | 3.1" |
| June | 73°F | 92°F | 81°F | 6.5" |
| July | 75°F | 92°F | 82°F | 6.1" |
| August | 75°F | 92°F | 82°F | 6.9" |
| September | 73°F | 90°F | 80°F | 5.1" |
| October | 65°F | 85°F | 74°F | 2.1" |
| November | 56°F | 78°F | 66°F | 1.7" |
| December | 54°F | 75°F | 63°F | 1.6" |
| Index | Zellwood | Florida | National |
| Air quality index | 37 | 35 | 42 |
| Pollution index | 713,198 | 7,570,785 | 2,726,193 |
| Measurement | Total |
| Days measured | 355 |
| Days with good air quality | 321 |
| Days with moderate air quality | 34 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Heathrow, FL | 6,898 | 37 | 26.0% |
| Mount Plymouth, FL | 4,812 | 37 | 26.0% |
| Tavares, FL | 17,228 | 37 | 26.0% |
| Lake Mary, FL | 16,987 | 37 | 26.0% |
| Umatilla, FL | 3,814 | 37 | 26.0% |
| Zellwood, FL | 2,877 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Mountain View, AR | 2,877 | 36 | 28.0% |
| Kennedy, CA | 2,877 | 45 | 10.0% |
| Franklin, MI | 2,877 | 56 | 12.0% |
| Springdale, NL | 2,877 | n/a | |
| Gowanda, NY | 2,876 | 37 | 26.0% |
| Zellwood, FL | 2,877 | 37 | 26.0% |
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