Birdwatch Note Rating
2024-06-10 05:05:44 UTC - HELPFUL
Rated by Participant: E1FE70629838BA0BECBF8D0082BCFF18D182D67CF4378661AE6CD4E47DE41885
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Original Note:
The PM2.5 concentration of 29 μg/m³ still falls short of the WHO standard of 5 μg/m³. To put this into perspective, the most polluted city in North America for PM2.5 is Coffeyville, Kansas, with an average annual concentration of 19 μg/m³. https://www.cfr.org/blog/chinas-battle-against-air-pollution-update
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