Air Quality
Graphs at a Glance
Ozone Exceedances in Virginia, 1997-2007
Air Quality, 2006
| State | # of Unhealthy Days * |
|---|---|
| Virginia | 56 |
| Maryland | 75 |
| North Carolina | 60 |
| Tennessee | 72 |
| Vermont | 0 |
| United States | 25 |
| * For those suffering from asthma and lung disease | |