| Source | NBC Local |
|---|---|
| Original Load Date | July 18, 2026, 11:01 a.m. |
| Last Updated | July 18, 2026, 11:01 a.m. |
| Original URL | https://www.nbcchicago.com/news/local/chicago-air-quality-briefly-improves-before-conditions-worsen-this-weekend/3963268/ |
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After days of wildfire smoke, Saturday will bring some improvement from
conditions on Thursday, when Chicago's [ air quality was ranked the worst ][5]
among any major city in the world. However, it still won't be completely clear
outside, and conditions are expected to deteriorate later this weekend...