India is home to four of the five cities in the world with the worst air pollution, the World Health Organization said on Thursday. But while WHO experts acknowledge India faces a “huge challenge", many countries are so bad that they have no monitoring system and cannot be included in its ranking.
The dirtiest air was recorded at Zabol in Iran, which suffers from months of dust storms in the summer, and which clocked a so-called PM 2.5 measure of 217. The next four were all Indian: Gwalior, Allahabad, Patna and Raipur.
Delhi:- After a series of surveys and extensive reports, there is no doubt that Delhi is the reigning king of polluted cities in the world. According to a recent World Health Organization report, the capital has six times the levels of airborne particulate matter than are considered safe. Delhi air has PM2.5 concentrations of 153 micrograms and PM10 concentrations of 286 micrograms, much more than the permissible limits.
Patna:- After Delhi, Patna has the highest level of the airborne particulate matter, PM2.5 considered most harmful to health. Patna with 149 micrograms is the second, next to Delhi. According to a WHO report these figures are six times what it considers a 'safe' limit––which is 25 micrograms.
Gwalior:- The tourist capital of Madhya Pradesh is the third most polluted city in India. Gwalior is surrounded by three main industrial and commercial areas: Sitholi, Banmore and Malanpur which accounts for the rise in air pollution.
Raipur:- Raipur, Chhattisgarh's capital is the 4th most polluted city in India. The city owes its pollution to the presence of many power plant and industries. Levels of harmful particles in air that are less than 2.5 micrometers (PM2.5): 134µg/m3
Allahabad:- No doubt Allahabad has won laurels for its urban planning, but it also earned the tag of one of the most polluted cities in our country. The main reason for this is because of a large number of textile industries. Allahabad had a PM 2.5 concentration of 100 micrograms making it the fifth most polluted city in the country.