New Delhi [India], February 6 (HBTV): The India Meteorological Department (IMD) has issued a weather warning for dense fog at isolated places over Punjab, Haryana, Chandigarh, and western Uttar Pradesh. Thunderstorms with lightning are also expected in isolated locations in Himachal Pradesh.

According to IMD data, the temperature in New Delhi was 14.4°C with 91 per cent humidity recorded at 8:30 AM on Tuesday. Wind conditions remained calm with no significant movement recorded as of 8:30 AM IST on February 4.

The Central Pollution Control Board (CPCB) reported that the Air Quality Index (AQI) in the national capital stands at 247, indicating a 'poor' air quality level.

Notably, several flights at Chennai International Airport were delayed due to dense fog.