People exercise at Lodhi gardens on a smoggy morning in New Delhi. AFP
India's capital New Delhi switched schools to online classes on November 18 until further notice because of worsening toxic smog, the latest bid to ease the megacity's health crisis. AFP
A man wears a face mask amid a thick layer of smog as air pollution increases in New Delhi. AP Photo
A family wearing face masks walk amid a thick layer of in New Delhi. AP Photo
Traffic passes on a road as the sky is enveloped with smog after New Delhi's air quality turned 'severe' due to alarming air pollution. Reuters
Jama Masjid engulfed in thick smog, in the old quarters of New Delhi. AFP
A man visits the Lodhi gardens on a cold smoggy morning in New Delhi. AFP
A metro train moves amid heavy smog on the outskirts of New Delhi. EPA
A cyclist with his face covered rides along a street on a cold smoggy morning in New Delhi. AFP
A man sweeps a road near India Gate as the sky is enveloped with smog in New Delhi. Reuters