Delhi saw an AQI of 413 with 31 stations recording severe levels at around 7 am on Wednesday. GRAP stage III was implemented with immediate effect on Tuesday.

Residents of Delhi-NCR woke up to yet another day of deteriorating air quality as air quality index (AQI) of the national capital rose to an alarming 413, according to data from central pollution control board (CPCB).

Delhi recorded a score of 413 on the AQI scale at around 7 am, while 31 of its active 39 stations read ‘severe’ air quality, according to CPCB's Sameer app.

Wazirpur recorded 458, the highest reading at around 7 am.

Air quality in the national capital and its adjoining areas plummeted to into the ‘severe’ category for the first time this season on Tuesday, as the AQI rose from 362 on Monday to 429 (as of 11.30 am)

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