What Happens When the Air Quality Index Surpasses 500?
Companies, agencies, institutions, etc
People
Groups
Physical locations
Places
Locations
Events
Positivity 50%
Negativity 50%
SOURCE:
https://www.nytimes.com/2023/06/09/climate/air-quality-index-500.html
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Summary
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.
As said here by BY JENNY GROSS