Afternoon Briefing: About those air quality readings yesterday
Readings from several popular weather apps had people across the Chicago area spending much of yesterday wondering whether their air was safe to breathe — until the dangerously unhealthy levels were revealed to be a glitch.
Early in the morning, Google's air quality map showed that Chicago had the worst air in the country. Apple's weather app, too, showed that the Air Quality Index had climbed into the 400s, a reading so hazardous that people are encouraged to stay indoors. (The Air Quality Index, which ranges from 0 to 500, is a measure of the density of five pollutants in the air: ground-level ozone, particulates, carbon monoxide, nitrogen dioxide and sulfur dioxide.)
To put that in perspective, that's as high as the levels reached in 2023 when smoke from wildfires in Canada blanketed much of the East Coast and turned the sky in New York City orange.
Here's what else is happening today. And remember, for the latest breaking news in Chicago, visit chicagotribune.com/latest-headlines and sign up to get our alerts on all your devices.
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Hamilton Spectator
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Newsweek
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