Pittsburgh, PA – A dangerous level of heat is gripping Pennsylvania today, with heat index values soaring into the upper 90s and possibly hitting 100°F in valleys and major cities like Pittsburgh, Altoona, and Johnstown.
According to the National Weather Service in Pittsburgh, high temperatures in the upper 80s to low 90s, combined with dew points in the upper 60s to low 70s, will push heat index levels to dangerous thresholds. The most extreme conditions are expected in urban centers and low-lying areas, where stagnant air and limited airflow compound the heat risk.
Much of western and central Pennsylvania, including Butler, Washington, and Westmoreland counties, are under a Red Level 3 heat risk, meaning anyone without access to air conditioning or proper hydration is vulnerable. Rural areas may see some relief, but urban heat islands will intensify the threat.
Residents are urged to limit outdoor activity, stay hydrated, check on elderly neighbors, and avoid leaving pets or children in vehicles. Public cooling centers may be available in Allegheny and surrounding counties.
The heat risk remains elevated through Friday evening, with little overnight relief expected. Additional advisories or extended warnings may be issued if high temperatures persist.
