GRAP 4 In Delhi: AQI Crosses 400, Here’s What’s Restricted And What’s Allowed

Just hours after GRAP-3 restrictions were implemented, authorities tightened pollution controls in Delhi and surrounding areas on Saturday evening by moving to GRAP-4.Earlier in the afternoon, the Commission for Air Quality Management (CAQM)—the central agency responsible for monitoring and managing pollution in Delhi and neighbouring states—had imposed GRAP-3 curbs as the Air Quality Index (AQI) surpassed 400, entering the ‘Severe’ category.By evening, the CAQM reported that the AQI, which was 431 at 4 pm, continued to rise and reached 441 by 6 pm. Under the GRAP system, air quality is divided into four levels: Poor (AQI 201–300), Very Poor (AQI 301–400), Severe (AQI 401–450), and Severe Plus (AQI above 450).The CAQM stated, “Considering the current air quality trend and to prevent furthe