FORECAST: Excessive Heat Warning and Air Quality AlertPhoenix has now had 21 days this year at 110 degrees or more. The new 30-year average (1991-2020) is 21 days a year, too.
MOST ACCURATE FORECAST: Excessive Heat Warning and Air Quality AlertOne more day of sizzling hot temperatures before changes start kicking in and storm chances return.
Philadelphia Weather: Excessive Heat ContinuesLlarisa Abreu has the latest forecast.
The warning lasts until Friday night.
![FORECAST: Excessive Heat Warning and Air Quality Alert [Video]](https://video.newsserve.net/300/v/20210828/2108280045-FORECAST-Excessive-Heat-Warning-and-Air-Quality-Alert.jpg)
![MOST ACCURATE FORECAST: Excessive Heat Warning and Air Quality Alert [Video]](https://video.newsserve.net/300/v/20210827/2108271513-MOST-ACCURATE-FORECAST-Excessive-Heat-Warning-and-Air.jpg)
![Philadelphia Weather: Excessive Heat Continues [Video]](https://video.newsserve.net/300/v/20210827/2108270954-Philadelphia-Weather-Excessive-Heat-Continues.jpg)
