The next heat wave in the Pittsburgh region is already underway, with dangerous heat continuing through Friday and then easing a bit over the July 4 weekend. Temperatures are expected to stay in the 90s through the weekend, with a noticeable drop into the mid- to upper-80s next week.

What the latest reports say

  • The Pittsburgh area was under an extreme heat warning through Friday evening.
  • Forecasters expected highs in the lower to mid-90s over the holiday weekend, with humid conditions keeping feels-like temperatures in the 90s.
  • The main heat dome was expected to weaken over the weekend, which should bring scattered showers and storms and start knocking temperatures down.
  • By next week, temperatures were forecast to fall into the mid- to upper-80s.

Practical read

If you mean “when does the next big surge of dangerous heat arrive,” the answer is: it’s here now and should linger through the end of the week before easing somewhat.

If you mean the next stretch of truly hot weather after this one, the current reporting does not point to another major heat wave immediately after this event; instead, it points to a modest cooldown next week.

Quick timeline

  • Now through Friday: peak heat and heat warnings.
  • Saturday through Sunday: still hot, but with a better chance of showers and storms.
  • Next week: cooler than this week, with highs more likely in the mid- to upper-80s.

Period| Expected conditions
---|---
Through Friday| Extreme heat, highs in the 90s, dangerous humidity. 11
Weekend| Slightly cooler but still hot, storms possible. 4
Next week| Heat eases into the mid- to upper-80s. 4

TL;DR: Pittsburgh’s next heat wave is happening now, and the region should stay hot through the weekend before easing next week.