Air quality in Delhi-NCR deteriorated to ‘Severe’ levels on Wednesday, prompting the re-imposition of Stage 3 of the Graded Response Action Plan (GRAP) from Thursday.

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– Delhi’s AQI jumped from 276 on Tuesday to 365 on Wednesday, hitting the ‘Severe’ category.
– Noida recorded an AQI of 317 (‘Very Poor’), Gurugram 310 (‘Very Poor’), Faridabad 279 (‘Poor’), and Ghaziabad 271 (‘Poor’).
– GRAP-3 restrictions include a ban on construction, demolition, and non-essential mining activities.
– BS-III petrol and BS-IV diesel four-wheelers banned in Delhi from today.
– Non-CNG, non-electric, and non-BS-VI diesel interstate buses restricted.
– Commercial vehicles prohibited from entering Delhi.
– Schools advised to shut up to Class 5 in Delhi-NCR.
– Slow wind speeds and smog worsening pollution levels.
– Day temperatures range between 20-24°C, night temperatures 12-14°C.
– IMD forecasts mild rain in early February, which may improve air quality.