Air quality levels in parts of Canada and the US have nosedived in recent days as winds have carried smoke from wildfires in Quebec and Nova Scotia across the continent. Things are bad enough that New ...
SALT LAKE CITY (KTVX) — On Friday, Feb. 4, Salt Lake City reached an air quality index score (AQI) of 154, which the state calls “unhealthy.” But what does that score really mean? According to an ...