Delhi's AQI reaches 'severe' levels at 409 as GRAP 4 restrictions are enforced.
Delhi's air quality reached 'severe' levels on Sunday with an AQI of 409, prompting ongoing GRAP 4 restrictions.
On Sunday, Delhi's air quality worsened to 'severe' levels, with the 24-hour average Air Quality Index (AQI) reaching 409, according to officials speaking to PTI. This followed a ‘very poor’ AQI of 370 on Saturday. The AQI scale categorizes air quality as follows: 0-50 (good), 51-100 (satisfactory), 101-200 (moderate), 201-300 (poor), 301-400 (very poor), and 401-500 (severe). The maximum temperature in the city was 24.1°C, three degrees above normal, while the minimum temperature settled at 7.3°C, a notch below normal, as reported by the India Meteorological Department (IMD).
Morning fog and high humidity levels, ranging from 68% to 97%, were observed across the city. IMD forecasts cloudy skies with light rain on Monday, with temperatures expected to range between 20°C and 7°C.
Air quality continues to decline in Delhi-NCR, even as GRAP 4 restrictions remain in place. The Centre's air quality panel implemented GRAP IV measures on December 16 as part of the winter pollution control plan, which includes a ban on all construction activities. Under GRAP Stage 4, restrictions also include a ban on the entry of non-essential polluting trucks and the mandatory shift of school classes (except for grades X and XII) to hybrid mode.
In line with the updated GRAP guidelines, students in grades VI-IX and XI across Delhi, Gurugram, Faridabad, Ghaziabad, and Gautam Buddh Nagar must attend classes in a hybrid format (both physical and online) under Stage 4. For Stage 3, hybrid learning is mandatory for grades V and below, with parents and students given the option to choose online education when available.
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