Model simulations track the movement of black soot pollution over the Tibetan Plateau from August–November 2009. This image shows haze on September 26, 2009.
Thick haze hung over northern India and Bangladesh in January 2013. Over the past decade, large cities in India have seen some of the world's fastest-rising levels of air pollution.
The high carbon monoxide concentrations shown in this satellite-based map reflect the poor air quality seen in the central and eastern United States on June 8, 2011.