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Headline : What does the air quality index really mean?

Read more from the original article on here at qz.com.




Tags : #does #air #quality #index #really #mean


No. of Paragraph 16

This week, the Northeastern US woke up on top of the world in a ranking it would rather not take part in: the air quality index (AQI).

The AQI breakdown goes like so: 0 to 50, good; 5 to 100, moderate; 101 to 150, unhealthy for sensitive groups; 151 to 200, unhealthy; 201 to 300; very unhealthy; and above 300, hazardous.

On Wednesday (June 7), the AQI reached as high as 374 in Manhattan and 420 in eastern Pennsylvania, a consequence of the smoke blowing south from Quebec’s wildfires. In Ottawa, the AQI surpassed 500 this week, though it is now returning to normal as the smoke drifts south.

At these levels, everyone exposed to outside air is considered likely to experience watery eyes and strained breathing, as well as a range of more serious health effects, with the elderly and infants most affected.

Read more from the original article on here at qz.com.


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