Pollen Count & Forecast for Kolkata

Kolkata’s dry season (February-April) is dominated by Yellow Flame and Indian Beech pollen; Yellow Flame Tree (Peltophorum pterocarpum) prolific in Alipore; Indian Beech (Millettia pinnata) widespread across Salt Lake streets and avenues. Congress Grass (Parthenium hysterophorus) contributes significantly from urban wastelands. Post-monsoon (October-November) sees high Grass (Poaceae) pollen levels, originating from the Maidan and along Hooghly River banks.

High humidity and stagnant air in narrow North Kolkata lanes trap pollutants and allergens. Monsoon months (June-September) see elevated Mould (Aspergillus, Penicillium) spore counts, from damp masonry and the East Calcutta Wetlands.