Overview
- In Hyderabad, Kukatpally PM2.5 hit 945 µg/m3 at 9 p.m. and 1,133 µg/m3 at 10 p.m., far above India’s ‘severe’ threshold.
- Hazardous levels lingered in Hyderabad into early October 21, with 442 µg/m3 at 1 a.m. and 315 at 2 a.m., improving to ‘poor’ by about 3 a.m.
- The Telangana pollution board reported online monitors were offline earlier, then showed Sanathnagar peaking at 500 by 10 p.m. and holding until midnight.
- In Kolkata and adjacent Howrah, WBPCB data showed ‘poor’ to ‘severe’ pockets including Victoria Memorial 186, Belur 364, Padmapukur 361 and Ghusuri 252.
- Environmentalists cited widespread breaches of the 8–10 p.m. window and loud crackers, and Kolkata Police arrested 45 people for illegal fireworks and disorderly conduct.