Delhi AQI 510
Delhi’s air pollution worsened, with the AQI reaching 510 at 10:01 am on November 5, according to AQI.in. The daily average had risen to 493 on November 4 from 410 on November 3.
Delhi’s AQI stood at 124 on October 30. After a brief improvement linked to rainfall and stronger winds, it rose to nearly 400 by November 2. The daily average then increased to 410 on November 3 and 493 on November 4. The reading of 510 recorded on the morning of November 5 reflects the recent rise in pollution.
After sunset, the ground cools and colder air becomes trapped beneath warmer air. This creates a temperature inversion that limits the vertical mixing of pollutants and keeps them closer to the ground. Weak winds and a shallower atmospheric mixing layer allow emissions to accumulate near the surface. The inversion is often strongest in the early morning.
Vehicles, road dust, construction activities, industries and other pollution sources are contributing to the air pollution. Stubble burning across neighbouring states is also identified as a source.
Diwali is approaching on November 8, and firecracker smoke could add further pollutants to the air. The possibility of additional smoke comes as pollution is already concentrating near the ground during the night and early morning.
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