New Delhi recorded an Air Quality Index (AQI) of 187 at 8 am on Monday, 26 October, placing the national capital in the 'moderate' pollution category, according to the Central Pollution Control Board (CPCB). While the overall reading marked a slight improvement from recent highs, multiple monitoring stations across the city continued to register elevated — and in several cases, 'poor' — levels of pollution.

Station-wise AQI Readings Across Delhi

Data from CPCB monitoring stations revealed sharp variation in air quality across different parts of the city. Among the lower readings, Burari recorded an AQI of 128, Badarpur at 125, Nangloi at 150, JNU at 157, and Mandir Marg at 165.

Several other locations, however, reported significantly worse conditions. Jahangirpuri topped the list at 251, followed by Vivek Vihar at 240, R.K. Puram at 233, CRRI Mathura Road at 231, Punjabi Bagh at 229, Narela at 227, and Mundka at 226. Stations at Uttam Nagar and Sirifort both recorded 215, Dwarka Sector 8 logged 207, while Patparganj, Sonia Vihar, and Rohini hovered between 200 and 202. The city's air quality is primarily being dragged by fine particulate matter — PM2.5 and PM10.

GRAP Stage 1 Invoked Across Delhi-NCR

In anticipation of worsening conditions, the Commission for Air Quality Management (CAQM) invoked Stage 1 of the Graded Response Action Plan (GRAP) across Delhi-NCR on 21 October. Under Stage 1 restrictions, the use of coal and firewood in tandoors at hotels, restaurants, and open-air eateries is banned. Diesel generator sets are also restricted, barring essential and emergency use.

This comes amid the annual October-November pollution spike that typically accompanies falling temperatures, reduced wind speeds, and crop stubble burning in neighbouring states — a recurring pattern that has strained Delhi's air quality management framework year after year.

Yamuna White Foam Returns Near Kalindi Kunj

Alongside the air quality concerns, thick white foam has reappeared on the Yamuna River near Kalindi Kunj, renewing attention to the river's chronic water pollution challenge. The foam, widely attributed to high levels of phosphate and ammonia from untreated sewage and industrial discharge, has become a near-annual sight during festivals and the cooler months.

The reappearance is particularly notable given that Delhi Chief Minister Rekha Gupta recently praised the government's Yamuna rejuvenation initiatives and described the inauguration of infrastructure projects worth approximately ₹9,000 crore as a 'joyful occasion' for residents. Critics argue that the foam's return — days after those remarks — underscores the gap between announced investments and on-ground outcomes.

What the Pollution Picture Means for Delhi Residents

An AQI between 101 and 200 is classified as 'moderate', meaning it may cause breathing discomfort to sensitive groups, including children, the elderly, and those with respiratory conditions. Readings above 200 — recorded at more than a dozen stations — fall in the 'poor' category, where prolonged exposure poses health risks for the general population as well.

With winter approaching and GRAP Stage 1 already active, authorities are expected to escalate restrictions further if pollution trajectories worsen over the coming days.