Post-Diwali Air Pollution Spikes in Mumbai, Pune, Delhi; AQI Crosses 400

After the Diwali celebrations on Sunday, many parts of major cities faced severe air pollution where AQI spiked, raising levels above the 400 mark, according to reports.
Gayatri Hasabnis
By : Updated On: 09 Nov 2026 15:25:PM
Post-Diwali Air Pollution Spikes in Mumbai, Pune, Delhi; AQI Crosses 400
(Representative Image: Magnific)

Many major cities have witnessed hazardous air after the Diwali celebrations on Sunday. According to the reports, the air pollution levels crossed the 400 mark in cities like Mumbai, Pune, Nagpur and Delhi.

In Mumbai, during Monday morning, the city was engulfed in smog. As highlighted by the reports, mainly due to firecracker emissions during Diwali, Pune experienced extremely high levels of air pollution early on Monday morning. The Air Quality Index (AQI) for the whole city reached 432, placing it in the severe category.

In Delhi, pollution remained a major problem on Monday morning, with multiple sites recording AQI levels above 400 the day after Diwali.

Mumbai Air Pollution

According to reports, many areas in Mumbai showed readings over 400. Before increasing quickly between 11 pm and 3 am and staying between 344 and 360, the AQI at the BKC-IITM monitoring station was 206 at 10 pm on Sunday. It was still 232 at 7 am on Monday. Reading Chembur were also very high, with the AQI rising to 334 before reaching 401 over the course of the night. The reading decreased to 216 by 7 am.

Navy Nagar was one of the regions that was most negatively impacted. At 10 pm, its AQI was 359, which was already high; it stayed close to 400 throughout the night, peaking at 497 at 2 am. It was 274 at 7 am. Many parts of the city experienced bad air quality at night and saw a significant decrease by morning.

Similarly, Ghatkopar’s AQI reached 221 and rose dramatically overnight, peaking at 257 at midnight and 421 at 1 am. The AQI remained high at 362 at 2 in the morning.

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