| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 35°F | 26°F | 3.0" |
| February | 17°F | 36°F | 27°F | 2.5" |
| March | 27°F | 49°F | 37°F | 2.9" |
| April | 38°F | 64°F | 50°F | 3.7" |
| May | 48°F | 75°F | 61°F | 3.6" |
| June | 58°F | 84°F | 70°F | 4.2" |
| July | 61°F | 86°F | 73°F | 4.5" |
| August | 60°F | 84°F | 71°F | 3.8" |
| September | 53°F | 78°F | 65°F | 3.4" |
| October | 42°F | 66°F | 53°F | 2.6" |
| November | 32°F | 52°F | 41°F | 3.0" |
| December | 23°F | 39°F | 31°F | 2.9" |
| Index | Sylvania | Ohio | National |
| Air quality index | 40 | 40 | 42 |
| Pollution index | 13,229,000 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 291 |
| Days with moderate air quality | 73 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.150% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.070% |
| Mercury | 0.220% |
| City | Population | Air Quality Index | National Avg. |
| South Monroe, MI | 6,194 | 1 | 98.0% |
| Luna Pier, MI | 1,134 | 1 | 98.0% |
| West Monroe, MI | 3,261 | 1 | 98.0% |
| Petersburg, MI | 1,178 | 1 | 98.0% |
| Deerfield, MI | 1,045 | 39 | 22.0% |
| Sylvania, OH | 19,242 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Mamaroneck, NY | 19,247 | 51 | 2.0% |
| Murray, KY | 19,254 | 44 | 12.0% |
| Syosset, NY | 19,254 | 51 | 2.0% |
| Haslett, MI | 19,223 | 36 | 28.0% |
| Arbutus, MD | 19,267 | 46 | 8.0% |
| Sylvania, OH | 19,242 | 40 | 20.0% |
Here are the best places to live in Ohio
10 Best cities in Ohio for employment
Check out the 10 safest cities in Ohio
See the best places to live in & around Sylvania