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

Delhi's air quality showed a marginal improvement on Tuesday as the Air Quality Index (AQI) dipped to 306 from Monday's 315, ...

Thick smog engulfed Punjab’s capital on Saturday morning as Lahore topped the list of the world’s most polluted cities, ...

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