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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)

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Near Realtime Observation At Delhi
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Air Quality Forecast
Bulletin & Message

 Air Quality and Weather Bulletin for Delhi NCR (23.06.2021)

  1. The air quality over Delhi-NCT is likely to remain in Moderate to Poor category on 23.06.2021 and Poor category on 24.06.2021. PM10 will be the predominant pollutant owing to strong surface winds favourable for raising dust concentration locally and transport of dust from arid regions. The air quality is likely to improve marginally but remain in Poor to Moderate category on 25.06.2021. The Outlook for subsequent 5 Days: The air quality is likely to remain largely in Satisfactory to Moderate category.
  2. The predominant surface wind is likely to be coming from North directions of Delhi with wind speed 05-12 kmph and partly cloudy sky on 23.06.2021. The predominant surface wind is likely to be coming from Northwest directions of Delhi with wind speed 10-20 kmph, partly cloudy sky and strong surface winds (speed 20-30 kmph) during the day on 24.06.2021.The predominant surface wind is likely to be coming from West-Northwest directions of Delhi with wind speed 12-20 kmph and partly cloudy sky with very light rain/thundershowers on 25.06.2021.
  3. Predicted maximum mixing depth is likely to be approx.  4400 m on 23.06.2021, 4600 m on 24.06.2021 and 3700 m on 25.06.2021 over Delhi. Maximum Ventilation index is likely to be approx 20000 m2/s on 23.06.2021, 37500 m2/s on 24.06.2021 and 31500 m2/s on 25.06.2021. The ventilation index lower than 6000 m2/s with average wind speed less than 10 kmph is unfavourable or dispersion of pollutants.
  4. Detailed forecast analysis and verification can be seen at https://ews.tropmet.res.in.

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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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