The Pennsylvania Department of Environmental Protection and its regional air quality partnerships have forecast a Code Orange Air Quality Action Day for ozone on Tuesday, August 28th for the Philadelphia region, which includes Montgomery County.

The forecast states:

On Tuesday, light southwest winds, higher weekday mobile source emissions, mostly sunny skies, and temperatures in the lower to middle 90s Fahrenheit will act to raise ozone concentrations to code ORANGE levels in southeastern Pennsylvania counties.

On air quality action days, young children, the elderly and those with respiratory problems, such as asthma, emphysema and bronchitis, are especially vulnerable to the effects of air pollution and should limit outdoor activities.

The U.S. Environmental Protection Agency’s standardized air quality index uses colors to report daily air quality. Green signifies good; yellow means moderate; orange represents unhealthy pollution levels for sensitive people; and red warns of unhealthy pollution levels for all.