Brian O’Neill: Don’t hold your breath for better air in Pittsburgh
“The good news is that this was the first warning the DEP issued for Pittsburgh this year, and there was also just one last year, on May 25. That said, ‘it’s really hot’ isn’t a satisfying explanation for why we had this action alert, given that it was above 90 degrees from Des Moines to Denver to Dallas on Wednesday and their air was still breathable.