Delhi Implements Stage 3 Air Quality Restrictions Amid Deteriorating Conditions

Delhi has activated Stage 3 restrictions under the Graded Response Action Plan due to deteriorating air quality, with the AQI reaching 'very poor' levels. The measures include halting non-essential construction and shifting primary schools to hybrid learning. Experts predict that the AQI may soon exceed 400, entering the 'severe' category. This article explores the implications of these restrictions and the ongoing challenges of air pollution in the region.

By Narendra Chaudhary Jan 16, 2026, 20:47 IST

Introduction to Air Quality Measures

On Friday, the Commission for Air Quality Management announced the initiation of Stage 3 restrictions under the Graded Response Action Plan (GRAP) due to worsening air quality in Delhi and the surrounding National Capital Region (NCR).

Understanding GRAP

GRAP consists of a series of escalating measures aimed at combating air pollution, activated when air quality reaches critical levels in the Delhi-NCR area. Established in 2020, the commission's primary goal is to tackle pollution in the NCR and nearby regions.

Details of Stage 3 Restrictions

The Stage 3 measures include prohibiting non-essential construction activities and halting operations of stone crushers and mining. These restrictions are in addition to those already enforced under Stages 1 and 2.

Additionally, primary schools up to Class 5 will transition to a hybrid learning model, allowing parents and students to choose between in-person and online classes where feasible.

Current Air Quality Status

As of 8:05 PM, the air quality index (AQI) in Delhi was recorded at 346, categorizing it as 'very poor,' according to the Sameer application, which provides real-time updates from the Central Pollution Control Board.

Forecasts from the India Meteorological Department and the Indian Institute of Tropical Meteorology suggest that low wind speeds and stable atmospheric conditions will hinder the dispersal of pollutants, as noted by an unidentified official.

Consequently, the average AQI in Delhi is anticipated to exceed 400, entering the 'severe' category in the upcoming days.

Understanding AQI Levels

An AQI reading between 201 and 300 indicates 'poor' air quality, while values from 301 to 400 signify 'very poor' conditions. Readings between 401 and 450 are classified as 'severe,' and anything above 450 is considered 'severe plus.' Such high AQI levels pose significant health risks, even to individuals without pre-existing conditions.

Historical Context

Stage 3 restrictions were previously lifted on January 2 after air quality showed improvement, although measures from Stages 1 and 2 remained active.

Since mid-October, Delhi and its neighboring areas have consistently reported air quality in the 'poor' or worse categories.

During winter, air quality in Delhi typically declines sharply, often ranking it as the world's most polluted capital. Factors contributing to this issue include stubble burning in Punjab and Haryana, vehicle emissions, firecracker usage during Diwali, lower temperatures, reduced wind speeds, and pollution from industries and coal-fired power plants.