Despite the Bombay High Court's order, it has come to light that air pollution increased in the midnight hours in the important cities of the district due to fireworks going on till late night. On both Monday and Tuesday, the air in Ulhasnagar and Badlapur was comparatively the most polluted. Air index in Ulhasnagar and Badlapur cities was at a bad level. Also, the amount of PM 2.5 in all the cities had gone to dangerous and extremely dangerous levels.
Firecrackers were allowed during Diwali from 8 pm to 10 pm due to deteriorating air quality in Mumbai Metropolis. However, in Thane, Kalyan, Ulhanagar, Badlapur and Bhiwandi cities of Thane district, firecrackers were burst till late night. There was a big increase in air pollution between Monday and Tuesday night. On Monday, the air quality index of Ulhasnagar city was recorded as 322, a very bad level. In Badlapur, the air quality index has been recorded as 231, a bad level.
Rest of the cities of Thane, Kalyan and Bhiwandi recorded moderate air quality index. The air quality index was recorded at a poor level of 264 on Tuesday at the air quality monitoring center at Upvan in Thane city. Air quality index was recorded at a bad level of 220 in Ulhasnagar and 206 in Badlapur city. 195 in Bhiwandi and 181 in Kalyan have been recorded as medium air quality index.
The air quality index is most polluted at midnight. The PM 2.5 component is reaching hazardous and ultra-hazardous levels at midnight. PM 2.5 concentrations ranged from 300 to 500 (micrograms per cubic meter) at midnight in all cities.
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