What Happens When the Air Quality Index Surpasses 500?
Published by The New York Times Science & Environment
The toxic air in the United States this week has flirted with the upper range of the 500-point scale. In the past decade, there have been times when the air quality was even worse.
Read the full article at: https://www.nytimes.com/2023/06/09/climate/air-quality-index-500.html