A Canadian man shared a photograph celebrating Aizawl's post-Diwali AQI of 56. The quiet night contrasted sharply with Delhi's severe pollution and continued fireworks. A post-Diwali morning in Mizoram's Aizawl looked nothing like the hazy skies seen in several Indian cities. And a Canadian man shared a picture of the clear blue sky and an Air Quality Index (AQI) of 56, saying his family had slept peacefully without hearing any firecrackers.