Apart from Delhi, Puducherry and Chandigarh, there are 8 cities in Punjab, 24 cities in Haryana, 16 cities in Uttar Pradesh, 23 cities in Bihar, 6 cities in West Bengal, 8 cities in Rajasthan, 15 cities in Madhya Pradesh, 6 cities in Gujarat, 5 cities in Andhra Pradesh, 22 cities in Karnataka, two in Odisha, 6 cities in Kerala, 7 cities in Maharashtra, 3 cities in Tamil Nadu, 12 cities in Chhattis. [...] The PM2.5 average of the eastern region is over three times the average of the cities in southern India and 22 per cent more polluted than North Indian cities (See Graph 1: Trend in winter average pollution among regions of India). [...] Graph 14: Trend in winter pollution among cities of Northeast India Note: Change in winter average and peak of a city is based on mean of daily PM2.5 values recorded at CAAQM stations in the city that have minimum 75 per cent data for this winter and previous winter. [...] Source: CSE analysis of realtime data from CPCB portal 4 28 Centre for Science and Environment Analysis Average PM2.5 concentration in cities of Uttar Pradesh (UP) and Delhi are among the highest in North India: While the entire north India is vulnerable to pollution build up, the overall annual average of Delhi and NCR is among the highest in the region. [...] (See Graph 5: Annual average of PM2.5 of key cities in North India in 2021 (uptill November 30, 2021)) Graph 5: Annual average of PM2.5 of key cities in North India in 2021 (uptill November 30, 2021) Note: PM2.5 values for sub-regions are based on the average of citywide values of all the cities in that region.
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