Nine out of ten people worldwide live in areas where air pollution exceeds guidelines, the World Health Organization said. The pollution puts these people at higher risk for heart disease, strokes and cancer.
"Air pollution continues take a toll on the health of the most vulnerable populations — women, children and the older adults," Flavia Bustreo, assistant director general at the WHO said in a news release, NBC News reported.
The new WHO air quality monitor shows that 92 percent of people live in places with dirty air. Approximately three million deaths each year are linked to outdoor air pollution. About 90 percent of those deaths occur in low- and middle-income countries.