Washington pollution levelsPipes Output2005 air pollution stats in Washington city, District of Columbia- September 11, 2008 <table><tbody><tr><td>County<td><td>Washington city<td><tr><tr><td>State<td><td>District of Columbia<td><tr><tr><td>Data from year<td><td>2005<td><tr><tr><td>Total number of days monitored<td><td>365<td><tr><tr><td>Good air<td><td>197 (53.97%)<td><tr><tr><td>Moderate air<td><td>162..http://pollution.allstats.info/District-of-Columbia/Washington-city/airpollution_2005.aspx |