Smog in the Baltimore Region

Although this year's ozone season got off to a relatively mild start, clouds of smog have made a fair showing in Baltimore region so far this year. As of last week, the region has experienced eight "code orange" days. A "code orange" day is one with an air quality index reading of between 101 and 150 and is defined as being unhealthy for sensitive groups. The Baltimore region saw its first "code red" event of the year on June 8. "Code red, with an air quality index of between 151 and 200, is unhealthy for everyone.

Data from:
<a href="http://www.cleanairpartners.net/historical.cfm?pageView=calendar">http://www.cleanairpartners.net/historical.cfm?pageView=calendar</a>;

Article from BMC Environmental News Brief