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Code Orange Air Quality Alerts Continue in Parts of Pennsylvania, Extending Into Thursday in Some Areas

Stagnant air under a temperature inversion is trapping fine particle pollution near the surface.

Overview

  • The Pennsylvania DEP has issued Code Orange Air Quality Action Days for fine particulate matter across Southeastern Pennsylvania, the Lehigh Valley, and the Susquehanna Valley.
  • National Weather Service alerts remain in effect until Thursday at midnight for Berks, Lehigh, and Northampton counties, with a separate alert covering the Philadelphia metro counties for Wednesday.
  • Susquehanna Valley counties including Cumberland, Dauphin, Lancaster, Lebanon, and York are under a Code Orange alert through Wednesday.
  • Code Orange conditions mean air may be unhealthy for sensitive groups such as children, older adults, and people with asthma, heart disease, or other lung conditions, who should limit strenuous outdoor activity.
  • Officials urge voluntary steps to cut emissions by avoiding wood-burning and open fires, limiting use of gas-powered equipment, and monitoring conditions on EPA’s AirNow.