Delhi AQI data gap explained: The world’s most polluted capital city is still largely flying blind when it comes to understanding the full scope of the toxic air its residents breathe.

The Hayli Gubbi volcano in Ethiopia erupted after nearly 12,000 years, sending ash plumes across the Red Sea to India.

Data from the Central Pollution Control Board (CPCB) revealed that the four most polluted cities in the country were all within the NCR, with Ghaziabad leading the chart with a severe Air Quality Index (AQI) of 422.


Farmers in over 800 villages across Punjab are now adapting to the use of balers to stack the stubble

Delhi's PM2.5 levels were below 1% for most of the season, with a recent increase to around 2% in a few days, as of early November. This recent rise is attributed to the typical seasonal increase in farm fires, with a peak expected in early November.

The budget for cloud seeding is over Rs 3.2 crore for five trials, translating to approximately Rs 64 lakh per sortie.

The budget for cloud seeding is over Rs 3.2 crore for five trials, translating to approximately Rs 64 lakh per sortie.

Delhi AQI today: The analysis by the Decision Support System (DSS), which tracks pollution sources, showed that the mix of emissions affecting Delhi had shifted since Diwali on October 20.

Stations at Jawaharlal Nehru Stadium, Nehru Nagar, Patparganj, and RK Puram each lost about eight hours of readings.

Despite the government's action plan, air quality experts warn that a fundamental shift in focus is critical.

As of August 17, Delhi has recorded 53 days of “satisfactory” air quality in 2025, the highest number in the same period since 2020

The air quality station in Sector 51 stopped functioning in April, the one run by TERI stopped in March, and the Vikas Sadan station has been offline since January.