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AIR QUALITY EARLY WARNING SYSTEM FOR DELHI
MINISTRY OF EARTH SCIENCES, GOVT. OF INDIA
पृथ्वी विज्ञान मंत्रालय, भारत सरकार
(Project By : Indian Institute of Tropical Meteorology, Pune)

Air Quality Forecast (UTC)
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Observation
Near Realtime Observation At Delhi
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Air Quality Forecast
Bulletin & Message

 Air Quality and Weather Bulletin for Delhi NCR (04.03.2021)

  1. The air quality over Delhi-NCR is likely to remain in Poor to lower end of very poor category on 04.03.2021. The air quality is likely to improve marginally and reach in Poor category on 05.03.2021 and Poor to Moderate category on 06.03.2021. The Outlook for subsequent 5 Days: The air quality is likely to improve marginally and remain in Moderate category owing to better ventilation conditions.
  2. The predominant surface wind is likely to be coming from West directions of Delhi with wind speed 06-10 kmph, likely to be calm during evening hours and mainly clear sky on 04.03.2021.The predominant surface wind is likely to be coming from West-Northwest directions of Delhi with wind speed 08-22 kmph, mainly clear sky, mist in the morning  and strong surface winds (speed 20-30 kmph) during the day on 05.03.2021.The predominant surface wind is likely to be coming from West directions of Delhi with wind speed 12-15 kmph, from Northeast direction during evening hours with wind speed upto 05 kmph, mainly clear sky and mist in the morning on 06.03.2021.
  3. Predicted maximum mixing depth is likely to be approx. 1300 m on 04.03.2021, 3100 m on 05.03.2021 and 2400 m on 06.03.2021 over Delhi. Maximum Ventilation index is likely to be approx. 2500 m2/s on 04.03.2021, 35000 m2/s on 05.03.2021 and 22500 m2/s on 06.03.2021.The ventilation index lower than 6000 m2/s with average wind speed less than 10 kmph is unfavourable for dispersion of pollutants.
  4. Detailed forecast analysis and verification can be seen at  https://ews.tropmet.res.in.

Total Visitors : 59094
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Current AQI
Forecast
Mid Visibility IGIA
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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.

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Visibility Range

CAT - IIIC

VISIBILITY: Below 50 M
CAT - IIIB

VISIBILITY: FROM 50M TO 174M
CAT - IIIA

VISIBILITY: FROM 175M TO 299M

CAT - II

VISIBILITY: FROM 300M TO 549M

CAT -I

VISIBILITY: 500M AND ABOVE

Air Quality Forecast Over India

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