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0–50: Good
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51–100: Moderate
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101–150: Unhealthy for sensitive groups
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151–200: Unhealthy
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201–300: Very unhealthy
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Above 301: Hazardous
With the latest reading, Kathmandu ranked the world’s second most polluted city, according to IQAir’s global air quality ranking.
India’s capital Delhi topped the list as the most polluted city globally on Tuesday morning.
Health experts advise residents to limit outdoor activities, wear protective masks, and keep windows closed as pollution levels remain dangerously high.

