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This list contains the top 500 cities by PM2.5 annual mean concentration measurement as documented by the World Health Organization covering the period from 2010 to 2022. The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries.
Delhi overtook Pakistan’s Lahore as the world’s most polluted city in Swiss group IQAir’s live rankings, with an air quality index (AQI) score of more than 1,000, which is considered ...
5 special squads have been formed to fight smog, Metropolitan Corporation Lahore, Water and Sanitation Agency (Wasa), police, district administration and Lahore Electric Supply Company (Lesco) [11] [12] Lahore jumped more than 10 places to become the city with the worst air in the world in 2021, according to an annual global survey by a Swiss ...
The most commonly used air quality index in the UK is the Daily Air Quality Index recommended by the Committee on the Medical Effects of Air Pollutants (COMEAP). [39] This index has ten points, which are further grouped into four bands: low, moderate, high and very high. Each of the bands comes with advice for at-risk groups and the general ...
Although pollution is at its worst from November to February, Delhi's air misses clean-air standards by a wide margin for much of the year. It is a noxious mix of emissions from its 9 million vehicles, construction dust and burning of waste. On the worst days, the air quality index, a benchmark ranging from zero (good) to 500 (hazardous ...
Air quality is reported by the U.S. Air Quality Index, as well as the Washington State Department of Ecology. County numbers are an average based on several cities’ most recently reported AQI ...
Air quality index of 2,553 and PM2.5 concentration of 947 μg per cubic metre reached in Multan on 8 November. The 2024 India–Pakistan smog is a severe record-breaking air pollution event that affected Eastern and Northern Pakistan and North India in November 2024, primarily in the Pakistani city of Lahore and Indian city of Delhi .
So yes, 2024 was terrible for free speech on America’s college campuses — the worst in recent memory, in fact. But 2025 is still ahead of us, and 2024's record is one we should try very hard ...