New Delhi: Delhis air quality showed slight improvement for the second consecutive day on Monday, though it remained in the poor category with an Air Quality Index (AQI) of 273 in the morning. The Central Pollution Control Board (CPCB) reported that Delhis AQI was 285 on Sunday, reflecting a shift from the previous 32 days of very poor and severe air quality (AQI above 400). The last time the city experienced poor air quality was on October 29, with an AQI of 268.Reasons For Air Quality Improvement Experts attribute the improvement to dry northwesterly winds and ample sunlight, which have helped disperse pollutants. However, the air quality remains concerning, as an AQI between 201 and 300 is considered harmful to sensitive groups. The AQI is divided into six categories: good(0-50), satisfactory(51-100), moderate(101-200), poor(201-300), very poor(301-400), and severe(401-500). Graded Response Action Plan in EffectDelhi is currently under Stage 4 of the Graded Response Action Plan (GRAP), as per the Commission for Air Quality Management (CAQM). On November 29, the Supreme Court instructed authorities to maintain stringent anti-pollution measures until at least Monday. Stage 4 of GRAP, implemented on November 18, aims to curb pollution levels.Weather Conditions: A Slight Warm-upIn terms of weather, the India Meteorological Department (IMD) recorded a minimum temperature of 10.4°C, which is 0.9°C above the seasonal average. The maximum temperature is expected to reach around 27°C, and the humidity was reported at 89% at 8:30 am. Despite the improvement in air quality, concerns about pollution and its effects on health persist.