Air Quality and Weather Bulletin for Delhi (02.02.2026)

दिल्लीकेलिएवायुगुणवत्ताऔरमौसमबुलेटिन (02.02.2026)

1. Past Weather and Air Quality Observation: The air quality over Delhi was in Poor category with CPCB AQI 265 at 4 PM on 01.02.2026. There has been fall in the minimum temperature upto 1°C - 2°C and appreciable rise in the maximum temperature upto 2°C - 4°C during the past 24 hours over Delhi. The maximum temperatures over Delhi were around 23°C to 25°C and the minimum temperatures are around 10°C - 13°C respectively. The minimum temperatures are appreciably above normal (3.1°C to 5.0°C) at isolated places, above normal (1.6°C to 3.0°C) at a few places and normal (-1.5°C to 1.5°C) over remaining parts of Delhi. The maximum temperatures were above normal (1.6°C to 3.0°C) at a few places and normal (-1.5°C to 1.5°C) over remaining parts of Delhi. Safdarjung Airport reported lowest visibility 100m from 0330 IST to 0830 IST, which thereafter improved to 200m from 0900 IST of today, 02-02-2026. Palam Airport reported lowest visibility 100m from 0200 IST to 0930 IST, which thereafter improved to 300m from 1000 IST of today, 02-02-2026. Partly cloudy sky conditions. The winds speed reaching upto 16 kmph from the east direction prevailed over past 24 hours. Generally cloudy sky. Dense fog at many places with wind speed reaching upto 10 kmph from the west direction to be prevailed over the region in the forenoon today.

2. Generally cloudy sky. Mist/Haze during night. The maximum temperatures are likely to be in the range of 18°C to 20°C. The maximum temperatures will below normal (-1.6 to -3.0°C) over Delhi. The predominant surface wind is likely to be from the northwest direction reaching up to 12 kmph during the afternoon hours. The wind speed will decrease becoming less than 08 kmph from the north direction during evening and night on 02.02.2026. Partly cloudy sky. Shallow to moderate fog at many places with dense fog at isolated places during morning hours. The maximum and minimum temperatures over Delhi are likely to be in the range of 20°C to 22°C and 07°C to 09°C respectively. The minimum temperature will near normal and the maximum temperatures will below normal (-1.6°C to -3.0°C) over Delhi. The predominant surface wind is likely to be from the northwest direction with wind speed associated with calm wind reaching up to 05 kmph during the morning hours. The wind speed will increase becoming upto 10 kmph from northwest direction during the afternoon. The wind speed will decrease becoming upto 06 kmph from the north direction during evening and night on 03.02.2026. Partly cloudy sky. Shallow fog at many places with moderate fog at isolated places during morning hours. The maximum and minimum temperatures over Delhi are likely to be in the range of 20°C to 22°C and 08°C to 10°C respectively. The minimum temperature will near normal and the maximum temperatures will below normal (-1.6°C to -3.0°C) over Delhi. The predominant surface wind is likely to be from the north direction with wind speed associated with calm wind reaching up to 05 kmph during the morning hours. The wind speed will increase becoming upto 10 kmph from northwest direction during the afternoon. The wind speed will decrease becoming upto 08 kmph from the northwest direction during evening and night on 04.02.2026. Partly cloudy sky. Shallow fog at many places with moderate fog at isolated places during morning hours. The maximum and minimum temperatures over Delhi are likely to be in the ranges of 20°C to 22°C and 08°C to 10°C respectively. The minimum temperature will near normal and the maximum temperatures will below normal (-1.6°C to -3.0°C) over Delhi. The predominant surface wind is likely to be from the northwest direction with wind speed upto 10 kmph during the morning hours. The wind speed will increase becoming upto 12 kmph from northwest direction in the afternoon. The wind speed will decrease becoming upto 08 kmph from the northwest direction during evening and night on 05.02.2026.

3. Predicted maximum mixing depth is likely to be 1200m on 02.02.2026, 1100m on 03.02.2026, 1250m on 04.02.2026, and 900m on 05.02.2026 over Delhi. Ventilation index is likely to be 4500m2/s on 02.02.2026, 3500m2/s on 03.02.2026, 5000m2/s on 04.02.2026 and 5500m2/s on 05.02.2026over Delhi. The ventilation index lower than 6000 m2/s with average wind speed less than 10 kmph is unfavourable for dispersion of pollutants.

4. The air quality is likely to be in the Moderate category on 02.02.2026. The air quality is likely to be in the Poor category from 03.02.2026 to 04.02.2026. The air quality is likely to be in the Moderate category on 05.02.2026. The outlook for the subsequent 6 Days: The air quality is likely to be in the Poor category.

5. Detailed forecast analysis and verification can be seen at https://ews.tropmet.res.in.

Air Quality Bulletin for Ahmedabad (02.02.2026)

1. The overall air quality of Ahmedabad was observed in the Moderate category with AQI 192 on 01.02.2026.

2. The air quality is likely to be in the Moderate category 02.02.2026 to 04.02.2026.

Air Quality Bulletin for Mumbai (02.02.2026)

1. The overall air quality of Mumbai was observed in the Moderate category with AQI 105 on 01.02.2026.

2. The air quality is likely to be in the Moderate category from 02.02.2026 to 04.02.2026.

Air Quality Bulletin for Pune (02.02.2026)

1. The overall air quality of Pune was observed in the Moderate category with AQI 170 on 01.02.2026.

2. The air quality is likely to be in the Moderate category from 02.02.2026 to 04.02.2026.