- Air quality improves slightly, advisory remains for Thursday WGN News
- Air quality improving in Chicago area, but still at unhealthy levels WGN News
- Air quality alerts extended until midnight Friday CNYcentral.com
- Air quality in Chicago remains at unhealthy levels for third day due to smoke from wildfires in Canada; rain forecast thursday WLS-TV
- What is the air quality in Chicago and how long will it be bad? NBC Chicago
- See full coverage on Google News
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