Jerad Klein with the National Weather Service points to an area of high pressure that brought hot air from the south and the tropics... combined it with high humidity... and pinned it down over the southern central and southeast US to form a "heat dome."
You don't have to be a meteorologist to know it's intensely hot in the nation's capital this summer. But why is this year more sweltering than most? And why does Washington seem to be among the hottest cities in the country? Environment reporter Sabri Ben-Achour goes in search of some answers.
[Music: "The Air That I Breathe (Made Famous By The Hollies)" by Omnibus Media - Karaoke Tracks from Great Ballads]