Twenty-two areas recorded ''severe'' air quality and 13 areas ''very poor'' air quality, the CPCB said.
In the National Capital Region (NCR), Ghaziabad, Faridabad, Noida and Greater Noida recorded ''severe'' air quality, it said.
The air quality was recorded 'severe'.
The region faced a major air quality crisis last year when severe pollution level forced the shutdown of schools and colleges.
The overall air quality will deteriorate further, with small fluctuations in the next three days if it does not rain.
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