Smoke from intense wildfires raging across Canada has drifted southward, prompting an air quality health advisory for New York City and surrounding regions. The advisory, issued jointly by New York State’s Department of Environmental Conservation (DEC) and Department of Health (DOH), covers Long Island, the New York City Metro area, Lower and Upper Hudson Valley, and the Adirondacks.
Officials warn that air quality in these areas is currently “unhealthy for sensitive groups,” including children, the elderly, and individuals with respiratory conditions. The advisory comes as tens of thousands of Canadians have been displaced by the fires, which continue to burn across vast swaths of forestland.
Wildfires release fine particulate matter (PM2.5) and other pollutants into the atmosphere, which can travel long stretches. These particles penetrate deep into the lungs and bloodstream, increasing the risk of asthma attacks, heart disease, and other serious health issues.
To help communities respond to pollution threats, the Air Quality Index (AQI) provides a standardized way to measure and communicate air pollution levels. The AQI takes into account pollutants like ozone, carbon monoxide, sulfur dioxide, and particulate matter. Ratings range from “Good” to “Hazardous,” with color-coded alerts to guide public health responses.
To gain insight into how air quality is tracked, click through to explore how the AQI operates.