After heavy rain, Delhi's air quality at year's best

Traffic move on a water logged street during rains in New Delhi, Tuesday morning. PTI Photo

Heavy rains drastically reduced the pollution level of the national capital, which recorded the best air quality of this year on Tuesday, authorities said.

According to the Central Pollution Control Board (CPCB) data, the overall air quality index (AQI) in the city was 133, which falls in the 'moderate' category.

This is the first time this year that an AQI as low as 133 was recorded, the CPCB data showed. In the first week of January too, the air quality had improved to 'moderate' category for a brief period of time.

Delhi has been battling hazardous pollution level for the past few months and for the last one month the air quality has been oscillating between 'very poor' and 'severe' category.

An AQI between 100 and 200 comes under 'moderate' category, 201 and 300 is considered 'poor', 301 and 400 'very poor', while that between 401 and 500 is 'severe'.

On Tuesday, two areas recorded 'satisfactory' air quality while 32 areas recorded 'moderate' air quality, the CPCB said.

In the National Capital Region, Noida, Faridabad, Ghaziabad, Gurgaon and Greater Noida recorded 'moderate' air quality, it said.

The overall PM2.5 level -- fine particulate matters in the air with a diameter of less than 2.5 micrometres -- in Delhi was 61, while the PM10 level was 110, it said.

Authorities said the drastic drop in pollution level was due to heavy rain that lashed the Delhi NCR.

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After heavy rain, Delhi's air quality at year's best

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