An AQI between 201 and 300 is considered 'poor', 301-400 'very poor' and 401-500 'severe', while the AQI between zero and 50 is considered 'good', 51 and 100 'satisfactory' and 101 and 200 'moderate
Between January 29 and February 8, Mumbai surpassed Delhi to become the second-most polluting city in the world and the most polluted city in India, according to the Swiss air surveillance index IQAir (Pic/Satej Shinde)
Mumbai's worsening air quality has become a major health concern. The residents of Chandivali, an upscale residential neighbourhood in central Mumbai, have started a social media campaign against the air pollution problems in the area
Locals said that concerned authorities failed to address the issue. On February 1, the residents led by a senior citizen, Arun Srivastava, held a meeting with Maharashtra Pollution Control Board (MPCB) and submitted a letter detailing about the presence of heavy smoke emitting from chimneys located on Khairani Road
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