Why is Delhi’s air quality fluctuating wildly this week?
Delhi's air quality has swung between 'Poor' and 'Very Poor' this week, with AQI rising and falling sharply. The wind direction has been predominantly from Haryana-Punjab, bringing in pollution from stubble burning, transport, power plants, and industry across the region. Moreover, a rise in Punjab's stubble burning, which reported 442 fires on Saturday, further worsened Delhi's air, experts say.