With the IMD and the IITM forecasts suggesting an improvement in the air quality, the Sub-Committee unanimously decided to watch the situation for a day or more, before invoking Stage 3 of GRAP.
The air quality index (AQI) improved to 'very poor' on Monday from ‘severe-plus’ on Sunday as the city recorded 334 AQI against 456 a day ago. However, the AQI will likely stay ‘very poor’ from Tuesday to Thursday. Greater Noida's air quality improved, too, on Monday as the city logging 374 ‘very poor’ AQI against 421 ‘severe’ AQI a day ago. Ghaziabad’s AQI improved but stayed 'very poor' as the city logged 392 AQI on Monday against 392 AQI on Sunday. In Delhi, the air quality improved to ‘very poor’ from ‘severe’. The AQI stood at 359 against 447 a day earlier. Noida’s air quality monitoring stations at sectors 62 and 116 recorded 358 and 349 ‘very poor’ AQIs, respectively, as sectors 125 and 274 logged 287 and 274 ‘poor’ AQIs, respectively. Greater Noida's Knowledge Park 5 and 3 air quality monitoring stations recorded 379 and 354 ‘very poor’ AQIs, respectively. Ghaziabad’s Sanjay Nagar and Vasundhara air quality
According to the CAQM, unfavourable meteorological conditions, including fog and haze, and low wind speed are the major causes behind the sudden spike in Delhi’s daily average AQI.
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