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WINTER FOG EXPERIMENT (WiFEX)
INDIAN INSTITUTE OF TROPICAL METEOROLOGY, PUNE, INDIA
भारतीय उष्णदेशीय मौसम विज्ञान संस्थान, पुणे, भारत
Ministry of Earth Sciences, Govt. of India

Fog forecast has been stopped and will be continued during next winter, However, real-time observations are available in observations page
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Visibility Forecast
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Observation
Near Realtime Observation At Delhi
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Forecast
Fog Forecast

Bulletin & Message

 Winter Fog Experiment Forecast (2020-21):

WIFEX forecast based on 24th Feb 2021 00Z IITM-GFS IC/BC:

1.       WRF-(4km) 5-member physics ensemble indicates fog over Delhi and IGI airport.  

IMD FDP Bulletin on fog forecast for 25th February 2021: 

  • Considering low level winds, Relative humidity, temperature inversion between 1000-925 hPa & minimum temperature and guidance from different models i.e. NCUM, GFS & ECMWF; Dense Fog unlikely over northern India during remaining days of winter season.  

  • https://anlac-symphony.com

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Mid Visibility IGIA
Forecast
Current AQI
X

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

X

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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