Delhi witnessed an average Air Quality Index or AQI of 375 in the month of November, with 303 being the lowest, as per latest data. The air quality in the Indian national capital remained in the ‘very poor’ or worse category throughout the month.

Delhi pollution: Even the best air Delhiites breathed in November was of 'very poor' category

Even stricter anti-pollution measures, under GRAP-IV, will be implemented in Delhi from Monday (Nov. 18) as the air quality in the capital has deteriorated to 'severe plus' level with the AQI being 457 at 7 pm on Sunday.

Stricter GRAP-IV anti-pollution measures kick in as Delhi air quality deteriorates to ‘severe plus’ category

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Delhi pollution: Even the best air Delhiites breathed in November was of 'very poor' category

Stricter GRAP-IV anti-pollution measures kick in as Delhi air quality deteriorates to ‘severe plus’ category