U.S. health officials have extended air-quality alerts in locales across the Midwest this week related to smoke from ongoing wildfires originating in Canada. Extraordinarily high air quality index (AQI) readings were recorded in several areas in recent days, although the danger has started to ease thanks to rain and shifting wind. Covenant HealthCare MedExpress in Michigan closed its doors for several hours last week after wildfire smoke compromised air quality inside the building, according to …
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