Ghaziabad Most Polluted, Shillong Cleanest in November: CREA

• Ghaziabad was the most polluted city in November, with PM2.5 levels above national standards for all 30 days, averaging 224 micrograms/cubic meter.
• Nine other cities, including Noida, Delhi, and Meerut, were among the most polluted, with 6 from UP and 3 from Haryana.
• Delhi ranked fourth with a monthly average PM2.5 of 215 micrograms/cubic meter; stubble burning contribution decreased to 7% this year.
• Shillong, Meghalaya, was the cleanest city in November, with a monthly average PM2.5 concentration of 7 micrograms/cubic meter.
• Pollution levels exceeded national limits in most cities across Rajasthan, Haryana, and Uttar Pradesh, indicating year-round pollution from transport, industry, and power plants.

Why It Matters: Air pollution in Indian cities, like Ghaziabad, remains a critical public health threat.