"The AQI levels dip to below 200 (moderate level) in most parts of Delhi, exactly as farm fires reduce to a handful in Punjab, Haryana and UP. These pictures from 10 a.m. today say it all," Shah tweeted.
Reacting to it, Kejriwal said as soon as stubble burning began in the first week of October, the AQI started rising.
"A very strong correlation can be seen between stubble burning and the spike in air pollution in north India. As soon as stubble burning began in the first week of October, the AQI started rising. Now that burning is coming to an end, air quality is also improving..," Kejriwal tweeted.