Smog in Delhi rises from farm fires lit after NASA's satellite tracking them passed: Report

Smoke from farm fires in Punjab and Haryana drove rise in Delhi pollution, pushing AQI to "very poor" category on Monday, Hindustan Times reported. It stated that most fires were lit in the evening after NASA's satellite, whose count is the standard measure of stubble burning, passed over the region. AQI rose from 117 on Saturday to 261 on Sunday.