Delhi's minimum temperature on Thursday dipped five notches below the season's average to settle at 16.4 degrees Celsius.
According to the weather department, the maximum temperature is expected to hover around 35 degrees Celsius.
The Central Pollution Control Board (CPCB) data showed the overall Air Quality Index (AQI) at 9 am stood at 203.
An AQI between zero and 50 is considered 'good', 51 and 100 'satisfactory', 101 and 200 'moderate', 201 and 300 'poor', 301 and 400 'very poor', and 401 and 500 'severe'.
The relative humidity at 8.30 am was 74 per cent, the IMD bulletin said.
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