<p class="title">The air quality in Delhi was under 'very poor' category on Friday morning because of high humidity, officials said.</p>.<p class="bodytext">The city received 8 mm rainfall till 8.30 am in past 24 hours and relative humidity was 94 per cent, a MeT department official said.</p>.<p class="bodytext">The air quality index (AQI) of Delhi was 350 at 9 AM, according to the Central Pollution Control Board (CPCB).</p>.<p class="bodytext">An AQI between 201 and 300 is 'poor', 301-400 'very poor' and 401-500 'severe' while the AQI above 500 falls in the severe plus category.</p>.<p class="bodytext">After a brief relief, the national capital's air quality plunged to the "very poor" category on Thursday because of high humidity following a light rain, officials said.</p>.<p class="bodytext">Delhi had been breathing relatively less polluted air for three days after a bright sun and improved wind speed pulled the city out of the grip of a dense haze that had been lingering over it since October 29.</p>.<p class="bodytext">But the increased humidity on Thursday proved harmful, they said.</p>.<p class="bodytext">Delhi's overall air quality index read 309 at 4 pm and 320 at 7 pm on Thursday.</p>
<p class="title">The air quality in Delhi was under 'very poor' category on Friday morning because of high humidity, officials said.</p>.<p class="bodytext">The city received 8 mm rainfall till 8.30 am in past 24 hours and relative humidity was 94 per cent, a MeT department official said.</p>.<p class="bodytext">The air quality index (AQI) of Delhi was 350 at 9 AM, according to the Central Pollution Control Board (CPCB).</p>.<p class="bodytext">An AQI between 201 and 300 is 'poor', 301-400 'very poor' and 401-500 'severe' while the AQI above 500 falls in the severe plus category.</p>.<p class="bodytext">After a brief relief, the national capital's air quality plunged to the "very poor" category on Thursday because of high humidity following a light rain, officials said.</p>.<p class="bodytext">Delhi had been breathing relatively less polluted air for three days after a bright sun and improved wind speed pulled the city out of the grip of a dense haze that had been lingering over it since October 29.</p>.<p class="bodytext">But the increased humidity on Thursday proved harmful, they said.</p>.<p class="bodytext">Delhi's overall air quality index read 309 at 4 pm and 320 at 7 pm on Thursday.</p>