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NASA Shares Worrying Images Of US East Coast Engulfed By Smoke From Canadian Wildfires
The air quality index measures PM2.5, less than 2.5 microns particles, to determine the intensity of air pollution in cities.
Pakistan pollution: NASA images show toxic black smog visible from space, Lahore's AQI above 600
This comes days after some cities in Pakistan logged record-breaking pollution levels with the Air Quality Index (AQI) ...