To get access to ad-free episodes, exclusive podcasts, unlimited briefings, stories, and transcripts, and other valuable bonus features sign up today. This week, our hosts⁠⁠⁠⁠⁠⁠⁠ ⁠Dave Bittner⁠, ...

The AQI breaks air pollution levels into six categories, each of which has a name, an associated color, and advice to go along with it. AQI values at or below 100 are considered satisfactory for ...