HARRISBURG, PA — The Pennsylvania Department of Environmental Protection (DEP) issued a Code Orange Air Quality Action Day for ozone for Thursday, July 30, 2020, for the counties of Bucks, Chester, Delaware, Montgomery, and Philadelphia in southeastern Pennsylvania.
The Air Quality Action Day is based on DEP’s Thursday forecast: mostly sunny skies, light southwesterly winds, and temperatures moving into the mid-90s. These conditions, combined with higher weekday emissions, will create significant ozone formation within the Air Quality Action Day area, with Code Orange concentrations in the afternoon.
The U.S. Environmental Protection Agency’s (EPA) Air Quality Index (AQI) provides standardized color codes for forecasting and reporting daily air quality. Green signifies good air quality; yellow means moderate air quality; orange represents unhealthy pollution levels for sensitive groups of people; and red warns of unhealthy pollution levels for all.
An Air Quality Action Day is issued when the AQI is forecasted to be code orange or higher. 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.
Residents and businesses
within the Air Quality Action Day area are strongly encouraged to voluntarily help reduce air pollution by:
- Conserving electricity by setting air conditioning to a higher temperature;
- Combining errands to reduce vehicle trips;
- Limiting engine idling; and
- Refueling cars and trucks after dusk.
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