Three major US cities top world’s worst air quality rankings as Canada wildfire smoke blankets America
US News Three major US cities top world’s worst air quality rankings as Canada wildfire smoke blankets America By Georgia Worrell Published July 16, 2026, 12:32 p.m. Add The New York Post on Google The most polluted air in the world today is in three major US cities – where readings are multiple times worse than the notoriously noxious Delhi, India – due to raging wildfires in Canada. Air pollution in Detroit, Michigan, was the worst in the world Thursday, with a score of 724 on the live global air quality index (AQI), according to IQAir – which shows that the atmosphere becomes “hazardous” starting at 301.
- ▪US News Three major US cities top world’s worst air quality rankings as Canada wildfire smoke blankets America By Georgia Worrell Published July 16, 2026, 12:32 p.m.
- ▪Add The New York Post on Google The most polluted air in the world today is in three major US cities – where readings are multiple times worse than the notoriously noxious Delhi, India – due to raging wildfires in Canada.
- ▪Air pollution in Detroit, Michigan, was the worst in the world Thursday, with a score of 724 on the live global air quality index (AQI), according to IQAir – which shows that the atmosphere becomes “hazardous” starting at 301.
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US News Three major US cities top world’s worst air quality rankings as Canada wildfire smoke blankets America By Georgia Worrell Published July 16, 2026, 12:32 p.m. ET (function() { var overlay = document.getElementById("nyp-player-lcp-overlay"); if (!overlay) { return; } function hideOverlay() { overlay.remove(); } function afterDCL() { requestAnimationFrame(hideOverlay); } if (document.readyState === "loading") { document.addEventListener("DOMContentLoaded", afterDCL, { once: true }); } else { afterDCL(); } })(); See more of our coverage in your search results. Add The New York Post on Google The most polluted air in the world today is in three major US cities – where readings are multiple times worse than the notoriously noxious Delhi, India – due to raging wildfires in Canada.
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