Concerned about poor air quality? How to read the AQI. USA Today - Vertical Jul 20, 2026 Jul 20, 2026 Updated 25 mins ago U.S. says Strait of Hormuz is open, Iran says it's closed Canada wildfires affect air quality before World Cup final Wisconsin wildfire smoke, people adjusting their outdoor plans Reggie Miller tells the Cavs to give LeBron whatever he wants for one last Cleveland run! Utah Football's Consistency and Changes in Coaching Sara Rodriguez has 'always been on the front lines' Wisconsin wildfire smoke, people adjusting their outdoor plans The story of Patrick Marsh is being told in new viewing platform Storm chaos unfolds on Lake Geneva mailboat tour Friday RAW: FILE: BUFFETT EXCLUDES GATES FOUNDATION FROM DONATIONS The story of Patrick Marsh is being told in new viewing platform All-Star Selections: Surprises, Stars, and Voting Controversies Democratic leaders respond to President Donald Trump's primetime address National Popcorn Day: The 5,000-Year-Old Snack from Bat Cave to Movie Theater Buckets US's ICE faces fresh backlash over anti-immigration operations Concerned about poor air quality? How to read the AQI. The 2026 World Cup: Terrific and toxic Top stories for July 17, 2026 Watch Now: Phil Hands draws Madison's next mayor for life US SERVICE MEMBERS KILLED AS US-IRAN TENSIONS RISE (430pET) Prefer us on Google Learn More USA TODAY's Julia Gomez explains how to read the Air Quality Index, or AQI, as concerns mount about smoke from Canadian wildfires. As featured on Wildfire smoke poses serious health risks. What to know More toxic than normal air pollution, wildfire smoke can linger in the air for weeks and travel thousands of miles. Latest video 'Rubbish': Ontario premier responds to Trump's wildfire tariff threat Commissioner Greg Sankey kicks off SEC Media Days in Tampa Trump Says Qatar-Gifted Air Force One Will Be 'Maxed Out' With New Security Upgrades Concerned about poor air quality? How to read the AQI. Top stories for July 20, 2026 'We gave it everything': Fans react to World Cup final game US strikes Iran bridges and collapses a tower at a key port What to look for as Brewers, Mets start series on Monday Latest video 'Rubbish': Ontario premier responds to Trump's wildfire tariff threat Commissioner Greg Sankey kicks off SEC Media Days in Tampa Trump Says Qatar-Gifted Air Force One Will Be 'Maxed Out' With New Security Upgrades Concerned about poor air quality? How to read the AQI. Top stories for July 20, 2026 'We gave it everything': Fans react to World Cup final game US strikes Iran bridges and collapses a tower at a key port What to look for as Brewers, Mets start series on Monday Facebook Twitter WhatsApp SMS Email Print Copy article link Save
Wildfire smoke poses serious health risks. What to know More toxic than normal air pollution, wildfire smoke can linger in the air for weeks and travel thousands of miles.
