As the world battles against poor air quality, a Swiss air quality technology company has categorized countries based on ...

The growing availability of low-cost air quality sensors is helping people across the world track air pollution.

Bengaluru reported an Air Quality Index of 32, one of the cleanest in India post-Diwali. In contrast, Delhi's AQI hit 336, ...

Delhi's air quality improved to the "poor" category on Sunday after remaining "very poor" during the day, while the minimum temperature settled at 15.8 degrees Celsius -- the lowest recorded in ...