In 2024, Delhi recorded ** percent of monitored days when PM10 levels exceeded India's daily National Air Quality Standards (NAAQS) 24-hour standard of 100 micrograms per cubic meter of air (μ²µ/³¾3). This was the highest percent of PM10 daily exceedances among India's most populated cities that year. In comparison, just percent of monitored days exceeded PM10 NAAQS in Chennai. However, India's daily NAAQS for PM10 is less strict than the World Health Organization air quality guideline for daily PM10 levels (** μ²µ/³¾3).
PM10 is suspended coarse particulate matter with a diameter of ** micrometers or less. It is linked to a variety of health issues, including respiratory diseases and cancer.Â
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Centre for Research on Energy and Clean Air. (January 9, 2025). Share of days when PM10 levels exceeded air quality limits in the most populated cities in India in 2024, by standard [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved August 03, 2026, from /statistics/1464445/percent-of-days-exceeding-pm10-limits-in-india-by-city/
Centre for Research on Energy and Clean Air. "Share of days when PM10 levels exceeded air quality limits in the most populated cities in India in 2024, by standard." Chart. January 9, 2025. ÌÇÐÄÆƽâ°æ. Accessed August 03, 2026. /statistics/1464445/percent-of-days-exceeding-pm10-limits-in-india-by-city/
Centre for Research on Energy and Clean Air. (2025). Share of days when PM10 levels exceeded air quality limits in the most populated cities in India in 2024, by standard. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: August 03, 2026. /statistics/1464445/percent-of-days-exceeding-pm10-limits-in-india-by-city/
Centre for Research on Energy and Clean Air. "Share of Days When Pm10 Levels Exceeded Air Quality Limits in The Most Populated Cities in India in 2024, by Standard." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 9 Jan 2025, /statistics/1464445/percent-of-days-exceeding-pm10-limits-in-india-by-city/
Centre for Research on Energy and Clean Air, Share of days when PM10 levels exceeded air quality limits in the most populated cities in India in 2024, by standard ÌÇÐÄÆƽâ°æ, /statistics/1464445/percent-of-days-exceeding-pm10-limits-in-india-by-city/ (last visited August 03, 2026)
Share of days when PM10 levels exceeded air quality limits in the most populated cities in India in 2024, by standard [Graph], Centre for Research on Energy and Clean Air, January 9, 2025. [Online]. Available: /statistics/1464445/percent-of-days-exceeding-pm10-limits-in-india-by-city/
