Hanoi’s air pollution ranks third in the world this morning
This morning (September 14), according to the IQAir air quality index, Hanoi ranks as the third most polluted city in the world, with an average AQI of 164.At 9 AM ...
Tag: – Air pollution not hazardous – Air pollution not hazardous in Hanoi – Measurement scale for air pollution not hazardous – AQI ranking – AQI index
