The EPA designates Liberty-Clairton, PA as a maintenance area, indicating air quality improvement. Local officials and groups acknowledge progress but emphasize the need for ongoing efforts.

Pittsburgh experiences a heatwave with potential thunderstorms in Ohio and morning fog. The heat index may reach 100 degrees, with a cooler, less humid weather expected later in the week.

Pittsburgh faces a summer of heatwaves, thunderstorms, and showers, with a marginal risk of severe storms and localized heavy rains predicted by the National Weather Service.

The National Weather Service Pittsburgh PA forecasts thunderstorms and potential flash floods in the Pittsburgh area with a marginal risk for severe storms and high humidity levels.

Pittsburgh to experience thunderstorms due to a stalling cold front, with potential flash flooding, high temperatures, and occasional gusty winds, persisting through the weekend.

The National Weather Service reports high temperatures and potential storms in Pittsburgh, with a heat advisory in effect and a chance of heavy rainfall later in the week.

Pittsburgh faces a heatwave with temperatures rising into the upper 80s to 90s Fahrenheit, according to the National Weather Service, with a chance of showers and storms by the weekend.

The NWS forecast for Pittsburgh indicates dry conditions with less humidity and mostly sunny skies, with heat and humidity increasing later in the week, potentially leading to showers and thunderstorms by the weekend.

The National Weather Service in Pittsburgh forecasts a week of diverse weather, including fog, a cool spell, and a heatwave with chances of storms and severe heat indices near triple digits.

The National Weather Service predicts a shift in Pittsburgh's weather with potential severe storms today, followed by dry, hot conditions midweek and possible storms again by the weekend.

Pittsburgh expects a mix of showers, thunderstorms, and fog this weekend, with a brief sunny break early next week before humidity and rain chances return.

Pittsburgh faces severe storms and possible flash flooding, with the National Weather Service issuing warnings and monitoring a stalled front for further weather activity.

The National Weather Service forecasts an active weather pattern for Pittsburgh and regions around it, with showers, thunderstorms, and risks of flash flooding.