American Top 40 with Casey and Shadoe

- Other than the list of weekend shows, this site was last updated 13 May 2026 (see the updates section below).

- Visit the CT40 page for more info on Casey's Top 40.

- AT40 celebrates its 56th Anniversary on July 4, 2026. Visit the Anniversary site for highlights from the past.

Updated: 13 May 2026: A list of all the AT40 shows that have aired as part of the AT40: The 1980s and a list of the AT40: 1970s programs are available.
Updated 13 May 2026: Information on the timeline of making an AT40 show was added to the On Air page.
(July 2025) Updated the anniversary section of the site to update the 2020s page.
(November 2023): The AT40 history page had a bit added to the Seacrest era section. A new picture was added to the pictures page.

AT40 Facebook groups: AT40 the 1970s, AT40: the 1980s, AT40 with Shadoe, This Week in AT40 History
Archived AT40: The 1970s and AT40:1980s shows are continuously playing on the iHeart radio website and app. Archived AT40 shows from March 1998 to early January 2004 are on this iHeart station.
A link to AT40 expert Pete Battistini's website is available on the links page
If you're a fan of classic AT40, you need to get "American Top 40 with Casey Kasem (The 1970s)" and "American Top 40 with Casey Kasem (the 1980s)" by Pete Battistini.

American Top 40 with Casey Kasem and Shadoe Stevens