Air Quality Early Warning System For Delhi

Bulletin & Message

Air Quality and Weather Bulletin for Delhi NCR (28.11.2022)

दिल्ली एनसीआर के लिए वायु गुणवत्ता और मौसम बुलेटिन (28.11.2022)

1. Air Quality Observation: The air quality over Delhi remained in Very Poor category with AQI 328 on 27.11.2022. Winds were from Northwest/West during daytime with speed 06-12 kmph but calm during night time in Delhi on 27.11.2022.

2. The air quality is likely to remain in Very Poor category on 28.11.2022 and deteriorate further but remain in Very Poor category on 29.11.2022. Meteorological conditions are likely to be highly unfavourable for dispersion of pollutants. The air quality is likely to be improve and remain in Very Poor category on 30.11.2022 and 01.12.2022. The outlook for subsequent 6 Days: The air quality is likely to remain largely in Very Poor category.

3. The predominant surface wind is likely to be coming from North direction in Delhi with wind speed clam to 04 kmph and mainly clear sky on 28.11.2022. The predominant surface wind is likely to be coming from Northwest direction in Delhi with wind speed upto 04 kmph during daytime, partly cloudy sky and mist in the morning on 29.11.2022. The predominant surface wind is likely to be coming from Northwest direction in Delhi with wind speed 04-06 kmph during daytime, mainly clear sky and mist in the morning on 30.11.2022. The predominant surface wind is likely to be coming from West/Northwest direction in Delhi with wind speed 06-08 kmph during daytime, mainly clear sky and mist in the morning on 01.12.2022.

4. Predicted maximum mixing depth is likely to be 1100 m on 28.11.2022, 1000 m on 29.11.2022, 1000 m on 30.11.2022 and 1000 m on 01.12.2022 over Delhi. Ventilation index is likely to be 1200 m2/s on 28.11.2022, 2000 m2/s on 29.11.2022, 3000 m2/s on 30.11.2022, 3500 m2/s on 01.12.2022 over Delhi. The ventilation index lower than 6000 m2/s with average wind speed less than 10 kmph is unfavorable for dispersion of pollutants.

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

Air Quality Index at Delhi

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Forecast

Air Quality Index at Pune

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Air Quality Index at Mumbai

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Air Quality Index at Kolkata

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Air Quality Index at Bengaluru

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Air Quality Index at Lucknow

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Air Quality Index at Patna

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Air Quality Index at Hyderabad

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Air Quality Index at Ahmedabad

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Air Quality Index Range

Good AQI: Good (0 - 50)
Air quality is considered satisfactory, and air pollution poses little or no risk

Satisfactory AQI: Satisfactory (51 - 100)
Air quality is considered satisfactory, and air pollution poses little or no risk

Moderate AQI: Moderate (101 - 200)
Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution

Poor AQI: Poor for Sensitive Groups (201 - 300)
Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air

Very Poor AQI: Very Poor (301 - 400)
Health alert: everyone may experience more serious health effects

Severe AQI: Severe (401 - 500)
Health warnings of emergency conditions. The entire population is more likely to be affected