Kolkata vs Nalbāri
Side-by-side air quality comparison between Kolkata and Nalbāri.
Live AQI from Open-Meteo CAMS (~45 km global model, updated hourly). Multi-year history from CPCB station data via aqinow.co pipeline (2016–2024, station-level daily records).
AQI Comparison
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kolkata averaged an AQI of 101 while Nalbāri averaged 129 — a 28-point (28%) gap, with Nalbāri the more polluted and Kolkata the cleaner of the two. On 359 days when both cities reported, Nalbāri was cleaner on 189 of them; the average daily gap was 61 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kolkata logged 1% Severe days and 47.800000000000004% Good-or-Satisfactory days; Nalbāri was 0% Severe and 41% Good-or-Satisfactory. Longest clean-air streaks: Kolkata 75 days, Nalbāri 18 days.
Year-over-year progress
Kolkata has improved by 76 AQI points (42.9%) from 2017 to 2024; Nalbāri has improved by 72 AQI points (35.8%) over the same window. The worst recorded day for Kolkata reached AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23; Nalbāri hit AQI 384 at Bata Chowk (PCBA) on 2024-01-08.
Station-level disparity
Kolkata spans 7 CPCB stations with a 56-point spread (min 95, max 151); Nalbāri spans 1 stations with a 0-point spread (min 141, max 141).