The World Health Organization (WHO) has announced some of the world’s most polluted cities, yesterday. They are:
- Iran- Zabol
- India- Gwalior, Allahabad, Patna and Raipur
According to WHO, India has four of the five cities in the world with the worst air pollution. Its capital, New Delhi, ranks as the ninth worst city for air pollution. Experts at WHO say India faces a “huge challenge”
However, air pollution in many countries is so bad that they have no monitoring system and cannot be included in the UN agencies ranking.
The city of Zabol in Iran, which suffers from months of dust storms in the summer, has the dirtiest air and recorded a fine particulate matter (PM2.5) measurement of 217.
Scientists have found that tiny particulate matter can cause long term health issues such as lung cancer, strokes and heart disease, and can trigger short term symptoms including heart attacks.
More than 7 million premature deaths occur every year worldwide due to air pollution, with 3 million of those due to outdoor air quality, WHO said.
WHO conducted a survey of 3,000 urban areas and the data shows only 2 per cent of cities in developing countries have air quality that meets WHO standards, compared to 44 per cent of cities in developed countries.