| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 38°F | 32°F | 7.7" |
| February | 17°F | 32°F | 25°F | 3.9" |
| March | 34°F | 51°F | 42°F | 9.4" |
| April | 42°F | 62°F | 52°F | 7.6" |
| May | 52°F | 74°F | 64°F | 5.6" |
| June | 63°F | 84°F | 73°F | 6.0" |
| July | 63°F | 82°F | 73°F | 6.8" |
| August | 65°F | 86°F | 76°F | 6.2" |
| September | 56°F | 82°F | 69°F | 7.0" |
| October | 50°F | 70°F | 59°F | 8.8" |
| November | 37°F | 51°F | 44°F | 3.2" |
| December | 24°F | 37°F | 30°F | 3.2" |
| Index | Xenia | Ohio | National |
| Air quality index | 47 | 40 | 42 |
| Pollution index | 735,656 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 213 |
| Days with moderate air quality | 152 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.003% |
| Mercury | 0.150% |
| City | Population | Air Quality Index | National Avg. |
| Waynesville, OH | 3,135 | 43 | 14.0% |
| Jamestown, OH | 2,150 | 43 | 14.0% |
| Harveysburg, OH | 725 | 43 | 14.0% |
| Shawnee Hills village, OH | 775 | 43 | 14.0% |
| Spring Valley, OH | 855 | 43 | 14.0% |
| Xenia, OH | 26,751 | 47 | 6.0% |
| City | Population | Air Quality Index | National Avg. |
| Chaska, MN | 26,753 | 46 | 8.0% |
| Twentynine Palms, CA | 26,748 | 89 | 78.0% |
| Sanger, CA | 26,744 | 60 | 20.0% |
| Lemon Grove, CA | 26,739 | 64 | 28.0% |
| Maple Valley, WA | 26,739 | 45 | 10.0% |
| Xenia, OH | 26,751 | 47 | 6.0% |
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