Overnight rain and thunderstorms gave Delhi some relief from pollution on Tuesday, but several monitoring stations continued to record very poor air quality, according to data from the Central Pollution Control Board.

Mundka recorded an AQI of 280, Narela 255, Okhla Phase 2 reached 223 and Delhi North Campus 205, all in the poor category. Neighbouring areas fared worse. Noida Sector 116 touched 267, while Sanjay Nagar in Ghaziabad recorded an extremely hazardous 322.

The rain helped settle dust particles, but vehicular emissions and industrial activity kept pollution levels high in several pockets. Delhi’s overall AQI is expected to remain in the poor range over the next two days, with moderate winds providing only limited relief.

In a separate announcement, Environment Minister Gopal Rai said the Red Light On, Gaadi Off campaign would run from October 18 to November 18. The annual drive urges motorists to switch off engines at red lights to cut vehicular emissions. Enforcement squads will be deployed at major intersections across the capital.