Will this new radar actually stop your winter flight delays?

The Essentials

• SkyCast combines radar and fog sensors to monitor atmospheric conditions around the airport.
• The system measures wind, turbulence, and visibility up to 3 kilometres above the runway.
• Pilots now receive advance weather alerts three hours before landing to avoid sudden diversions.

The Pulse

Indira Gandhi International Airport just installed SkyCast, an advanced weather monitoring setup that tracks fog and turbulence before it hits the runway. The system combines radar wind profilers with spectrometers specifically designed to measure how pollution particles interact with winter fog in Delhi.

This answers the biggest question for anyone flying in or out of the capital: yes, it is designed to stop you from spending six hours trapped on a tarmac this December. Instead of waiting until visibility drops to zero, air traffic controllers now get a three-hour advance warning. This means pilots can adjust their landing times or divert long before they begin their final descent.

The technology grew out of a 2015 study by the Indian Institute of Tropical Meteorology to understand why Delhi fog is so uniquely stubborn. India is currently the 19th country to deploy this specific combination of remote atmospheric sensing. Following this Delhi installation, Jewar Airport is next in line to receive the equipment before it rolls out to other major transit hubs across the country.

The Snapshot

The Big Picture

Winter flight disruptions cost Indian airlines crores annually while creating massive logistical headaches for millions of passengers across the country. Traditionally, domestic carriers like IndiGo and Air India have had to rely heavily on reactive ground-level visibility readings, often forcing last-minute diversions to smaller airports like Jaipur or Lucknow when Delhi fogs over entirely. By shifting from reactive measurement to predictive atmospheric modelling, national aviation authorities are finally attempting to treat extreme weather as a manageable data problem rather than an unpredictable act of nature.

The India Prospective

If you travel frequently for work, this directly impacts your winter bookings. Delhi serves as the primary northern transit hub, meaning a morning fog delay there usually cascades into delayed evening flights in Bengaluru or Mumbai. While it will not completely clear the skies, accurate three-hour alerts mean airlines can notify you before you leave for the airport, rather than after you have cleared security.

The Inside Intel

The technology specifically targets urban fog behaviour. Instruments like the Ground-based Fog Aerosol Spectrometer are installed precisely because Delhi air pollution interacts with atmospheric moisture far differently than natural fog does. The hardware measures the exact relationship between aerosol particles and microscopic fog droplets. By doing this, the system treats winter smog as a complex, distinct meteorological event rather than just simple low cloud cover over the airport.

The UDHQ. Take

Unbox Daily HQ. views this as a necessary infrastructure upgrade that you will hopefully never notice, except through the absence of frustrating delays. While it operates entirely behind the scenes, you should absolutely factor it into your winter travel plans. Once this system is fully integrated with airline notification apps, you should expect far more accurate delay warnings before you leave home. Keep an eye out for how domestic carriers update their weather alert policies this coming winter.

Best for: frequent domestic flyers routing through northern India during the winter months who need reliable scheduling.

Who Is This For: Perfect for 28 to 50 working professionals in corporate roles who regularly transit through Delhi and cannot afford to lose a working day to tarmac delays.

The Checkout

Indira Gandhi International Airport – Home Page

The Source

Ministry of Earth Sciences | PIB.GOV.