| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 37°F | 29°F | 1.9" |
| February | 21°F | 39°F | 29°F | 1.9" |
| March | 32°F | 53°F | 41°F | 3.6" |
| April | 42°F | 66°F | 53°F | 3.3" |
| May | 52°F | 75°F | 63°F | 3.5" |
| June | 60°F | 83°F | 71°F | 5.3" |
| July | 64°F | 85°F | 74°F | 4.3" |
| August | 62°F | 84°F | 73°F | 2.7" |
| September | 55°F | 78°F | 66°F | 3.7" |
| October | 44°F | 66°F | 54°F | 3.3" |
| November | 33°F | 54°F | 43°F | 2.2" |
| December | 27°F | 42°F | 34°F | 3.0" |
| Index | Powell | Ohio | National |
| Air quality index | 46 | 40 | 42 |
| Pollution index | 21,574,800 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 237 |
| Days with moderate air quality | 127 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.230% |
| Carbon Tetrachloride | 0.100% |
| Lead | 0.190% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Magnetic Springs, OH | 349 | 46 | 8.0% |
| Dublin, OH | 47,824 | 46 | 8.0% |
| Huber Ridge, OH | 4,213 | 46 | 8.0% |
| New California, OH | 1,330 | 46 | 8.0% |
| Upper Arlington, OH | 35,364 | 46 | 8.0% |
| Powell, OH | 13,353 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Palos Verdes Estates, CA | 13,359 | 72 | 44.0% |
| Yulee, FL | 13,346 | 43 | 14.0% |
| North Valley, NM | 13,331 | 53 | 6.0% |
| Santa Fe, TX | 13,326 | 52 | 4.0% |
| La Grande, OR | 13,380 | 20 | 60.0% |
| Powell, OH | 13,353 | 46 | 8.0% |
Here are the best places to live in Ohio
Most Dangerous Cities In The US
See the best places to live in Powell
Check out the 10 safest cities in Ohio