Air Quality and Weather Bulletin for Delhi (15.10.2026)

दिल्ली के लिए वायु गुणवत्ता और मौसम बुलेटिन (15.10.2026)

1. Past Weather and Air Quality Observation: The air quality over Delhi was in the Moderate category with CPCB AQI 181 at 4PM on 14.10.2026. There has been rise in maximum temperatures by 1°C and rise in minimum temperatures by 1-2°C over Delhi during the past 24 hours. The maximum temperatures were in the range of 32-33°C and the minimum temperatures are in the range 21-23°C respectively during past 24 hours over Delhi. The minimum temperatures were appreciably above normal (3.1°C to 5.0°C) at a few places and above normal (1.6°C to 3.0°C) over remaining parts of Delhi. The maximum temperatures were below normal (-1.6°C to -3.0°C) at isolated places and normal (-1.5°C to 1.5°C) at remaining places over Delhi. Mainly clear sky with surface wind speed 18 kmph from the southeast direction prevailed over Delhi during past 24 hours. Generally cloudy sky with surface wind speeds up to 28 kmph gusting to 46 kmph from the northeast direction likely to prevail during forenoon over the region today.

2. Generally cloudy sky. A spell of very light to light rain at many places with moderate rain at isolated places accompanied with thunderstorm/lightning and strong winds 40-50 kmph gusting to 60 kmph most likely during forenoon to afternoon. Another spell of very light to light rain at many places accompanied with thunderstorm /lightning very likely during evening to night. The maximum temperatures over Delhi are likely to be in the range of 29-31°C. The maximum temperatures will be below normal (-1.6°C to -3.0°C) at most places over Delhi. The predominant surface wind is likely to be from the southeast direction with surface wind speed reaching up to 15 kmph during the afternoon. The surface wind speed will increase becoming up to 20 kmph from the southeast direction during evening and night hours on 15.10.2026. Generally cloudy sky. A spell of very light to light rain at many places accompanied with thunderstorm/lightning during early morning to noon. The maximum and minimum temperatures over Delhi are likely to be in the range of 29°C to 31°C and 18°C to 20°C, respectively. The minimum temperature will be near normal (-1.5°C to 1.5°C at most places, and the maximum temperatures will be below normal (-1.6°C to -3.0°C) at most places over Delhi. The predominant surface wind is likely to be from the southeast direction with wind speed reaching up to 15 kmph during the morning hours. The surface wind speed will increase becoming up to 18 kmph from the east direction during afternoon. The surface wind speed will decrease becoming up to 15 kmph from the east direction during evening and night hours on 16.10.2026. Partly cloudy sky. The maximum and minimum temperatures over Delhi are likely to be in the range of 31°C to 33°C and 20°C to 22°C, respectively. The minimum temperature will be above normal (1.6°C to 3.0°C) at most places, and the maximum temperatures will be near normal (-1.5°C to 1.5°C) at most places over Delhi. The predominant surface wind is likely to be from the east direction with wind speed reaching up to 15 kmph during the morning hours. The surface wind speed will increase becoming up to 18 kmph from the southeast direction during afternoon. The surface wind speed will decrease becoming up to 15 kmph from the northeast direction during evening and night hours on 17.10.2026. Mainly clear sky. The maximum and minimum temperatures over Delhi are likely to be in the range of 31°C to 33°C and 19°C to 21°C, respectively. The minimum temperature will be above normal (1.6°C to 3.0°C) at most places, and the maximum temperatures will be near normal (-1.5°C to 1.5°C) at most places over Delhi.  The predominant surface wind is likely to be from the northwest direction with wind speed reaching up to 10 kmph during the morning hours. The surface wind speed will increase becoming up to 20 kmph from the northwest direction during afternoon. The surface wind speed will decrease becoming up to 15 kmph from northwest direction during evening and night hours on 18.10.2026.

3. Predicted maximum mixing depth is likely to be 2500m on 15.10.2026, 1000m on 16.10.2026, 3450m on 17.10.2026, and 3000m on 18.10.2026 over Delhi. The ventilation index is likely to be 4500 m2/s on 15.10.2026, 6000 m2/s on 16.10.2026, 15500 m2/s on 17.10.2026 and 15500 m2/s on 18.10.2026 over Delhi. The ventilation index lower than 6000 m2/s with an average wind speed of less than 10 kmph is unfavorable for the dispersion of pollutants.

4. Air quality is likely to be in the Moderate category on 15.10.2026. The air quality is likely to be in the Satisfactory category on 16.10.2026. The air quality is likely to be in the Moderate category from 17.10.2026 to 18.10.2026. The outlook for the subsequent 6 Days: The air quality is likely to be in the Moderate to Poor category.

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

For further information: https://nwp.imd.gov.in/airqualityfc_bulletin_mausam.php