These days in many cities of the world, including India, people are having trouble breathing because of air pollution. Swiss firm IQAir has shared a live ranking of 121 countries in this regard. According to this ranking, the situation is very bad in two cities of India and Pakistan. India has 3 cities in the list of 121 countries, of which the national capitals are Delhi, Kolkata and Mumbai. On November 13, capital Delhi is number one in the live ranking of Swiss firm IQAir. AQI recorded up to 515 in Delhi today.
Second district of Pakistan
At the same time, Pakistan’s Lahore district is at number two. An AQI of 432 has been measured here. Lahore has an AQI of 432 in IQAir’s live ranking. At the same time, the neighboring city of Karachi is also included in the list. Karachi is ranked 14th with an AQI of 147. 
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The city of this country is at the third number
Kinshasa in the Democratic Republic of Congo is the third most polluted city in the world. An AQI of 193 has been measured here. At the same time, the Egyptian city of Cairo was ranked fourth, with an AQI of 184. At the same time, the name of Hanoi, the capital of Vietnam, is on the fifth place in the ranking. Here the AQI level has reached 168. At number six is the city of Doha in Qatar, which recorded an AQI level of 166. Apart from this, the name of Riyadh of Saudi Arabia is at number 7, the AQI here is 160.
Names of 2 more cities in India
Kathmandu, the capital of Nepal, ranked 8th in the ranking list, with an AQI level of 160 recorded. In ninth place is the city of Ulaanbaatar in Mongolia with an AQI level of 158. While Mumbai city is ranked 10th with an AQI of 158. It is followed by Kolkata, where an AQI of 136 was recorded. 
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At the same time, Dhaka, the capital of Bangladesh, is at number 17. where the AQI reached 122. In this list, 7 Chinese cities have been found to have very bad air.
How bad at what level?
Air pollution levels are usually measured as the Air Quality Index or AQI. According to foreign standards, an AQI of more than 200 is considered in the ‘very poor’ category and a level of 300 indicates ‘severely poor conditions’. At the same time, if the AQI level is between 0-50 it is considered good, if it is 51-100 it is moderate and if it is between 101-150 it is considered ‘bad air’ for vulnerable groups. . Whereas, if AQI is found between 151 to 200 then it is ‘dangerous’. Apart from this, if it is found between 201-300 level then it is considered as ‘very dangerous’ and if it is found above 301 then it is considered as ‘very dangerous’.
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