Delhi's air quality improves significantly

New Delhi: Delhi's air quality significantly improved and was registered in 'poor' category on Monday due to "unusual increase" in the wind speed, authorities said. According to the Central Pollution Control Board (CPCB) data, the overall air quality index (AQI) in the city was 226, which falls in the 'poor' category.

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

The city's air quality was severe till Sunday but with improved wind speed which was blowing at 20 km/hour, the air quality significantly improved and was recorded in poor category, authorities said.

As many as 26 areas recorded 'poor' air quality and four 'moderate', the CPCB said.

In the National Capital Region (NCR), Ghaziabad, Faridabad, Noida and Greater Noida recorded 'poor' air quality, it said.