Many towns and cities recorded their highest readings of one pollutant, known as PM 2.5, in 20 years.
Air Pollution From Wildfire Smoke Set Records for Many, Analysis Shows
Many towns and cities recorded their highest readings of one pollutant, known as PM 2.5, in 20 years.
Source: The New York Times
This story was originally published by The New York Times. Visit the original publication for further details.
Open original publication
