Where can I watch “American Experience” Season 37 Episode 4 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

Do I need to watch earlier episodes before “Clearing the Air: The War on Smog”?

Watching earlier episodes in season 37 helps you follow the plot and character arcs leading into this episode.

Watch American Experience Season 37 Episode 4 Online

“Clearing the Air: The War on Smog” — Watch "American Experience" Season 37 Episode 4 online in HD for free. Check streaming providers, cast, and episode details.

Aug 26, 2025 Season 37 Episode 4 53 min TV-PG

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American Experience Season 37

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Where can I watch "Clearing the Air: The War on Smog" online?

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Season 37 Episode 4 — Aired on Aug 26, 2025 • runs about 53 minutes.

This page includes 2 official still(s) (when available) plus legal availability links.

Looking for “watch American Experience Season 37 Episode 4 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

A chronicle of how Los Angeles' devastating smog problem in the 1940s and 50s led to the creation of the Environmental Protection Agency (EPA) and the Clean Air Act.