99% population breathe poor quality air: WHO

Almost the entire global population (99 per cent) breathes air that exceeds air quality limits, and threatens their health, according to a report by the World Health Organisation (WHO), ahead of World Health Day.

World Health Day is observed annually on April 7. This year it celebrates the theme: 'Our planet, Our health'.

A record number of over 6,000 cities in 117 countries monitor air quality. Of these, air in 17 per cent of cities in high-income countries below the WHO's Air Quality Guidelines for particulate matter (PM) PM2.5 or PM10 and nitrogen dioxide (NO2). In low- and middle-income countries, air quality in less than 1 per cent of the cities complies with WHO recommended thresholds, the report said.

About 4,000 cities/human settlements in 74 countries collect NO2 data at ground level. Their measurements show that only 23 per cent of people in these places breathe annual average concentrations of NO2 that meet recommended quality levels.

The findings have prompted the WHO to highlight the importance of curbing fossil fuel use and reduce air pollution.

"Current energy concerns highlight the importance of speeding up the transition to cleaner, healthier energy systems," WHO Director General, Dr Tedros Adhanom Ghebreyesus, said in a statement.

"High fossil fuel prices, energy security, and the urgency of addressing the twin health challenges of air pollution and climate change, underscore the pressing need to move faster towards a world that is much less dependent on fossil fuels," he added.

Meanwhile, the WHO is also calling for a rapid intensification of actions to monitor air quality and identify sources.