‘Not normal’: On one April day, all of the planet’s top 50 hottest cities were in just one country

By Laura Paddison, CNN (CNN) — On one day in late April, something very unusual happened. Every single one of the planet’s top 50 hottest cities was in just one country: India. This is according to data compiled by AQI, the air quality monitoring platform. There is “no modern precedent,” AQI said on its website.