Baltimore region under Code Orange air quality alert due to Canadian wildfire smoke

Hazy skies and unhealthy air conditions are once again in the Baltimore region due to Canadian wildfire smoke. The smoke is passing through North and Western Maryland, and is expected to persist through midday Tuesday, according to the Maryland Department of Environment. Multiple areas in Maryland, including Baltimore City and its surrounding counties, are under a Code Orange air quality alert, which means the air is unhealthy for sensitive groups, including children, older adults, and people with heart and lung disease.