Kolkata, West Bengal, India — Bortle class 8 (VIIRS satellite data, 2025). Estimated sky brightness SQM 17.61 mag/arcsec², naked-eye limiting magnitude ~3.3, radiance 38.95 nW/cm²/sr.
Kolkata has a city sky (Bortle 8). Only the Moon, planets and a few dozen of the brightest stars are visible. Only a few dozen of the brightest stars are visible to the naked eye (limiting magnitude ~3.3).
No — the Milky Way is not visible from Kolkata (Bortle 8 sky). You need to travel to a darker location to see it.
Satellite data shows a Bortle 4 sky (SQM ~21.52) about 46 km south-east of Kolkata. Explore the light pollution map to plan a dark-sky trip.
Citizen scientists have contributed 48 sky quality readings near Kolkata, averaging SQM 18.61 (Bortle ~8).
Kolkata has a city sky (Bortle 8). Only the Moon, planets and a few dozen of the brightest stars are visible. The estimated sky brightness is SQM 17.61 mag/arcsec² (VIIRS satellite data, 2025). Only a few dozen of the brightest stars are visible to the naked eye (limiting magnitude ~3.3).
No — the Milky Way is not visible from Kolkata (Bortle 8 sky). You need to travel to a darker location to see it.
Satellite data shows a Bortle 4 sky (SQM ~21.52) about 46 km south-east of Kolkata. Check the SkyQI light pollution map to plan a route and find nearby community readings.
Photograph the night sky with the free SkyQI app (iOS and Android) or upload a photo at skyqi.in. You get an instant SQM value and Bortle class for your exact location — satellite estimates can understate the skyglow you actually see from the ground, so real measurements from Kolkata improve the map for everyone.
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