Kolkata vs Motihari
Side-by-side air quality comparison between Kolkata and Motihari.
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 Motihari averaged 116 — a 15-point (15%) gap, with Motihari the more polluted and Kolkata the cleaner of the two. On 662 days when both cities reported, Motihari was cleaner on 347 of them; the average daily gap was 54 AQI points.
Seasonality & days
Kolkata peaks in January, while Motihari peaks in November. Kolkata logged 1% Severe days and 47.800000000000004% Good-or-Satisfactory days; Motihari was 1.2% Severe and 39.1% Good-or-Satisfactory. Longest clean-air streaks: Kolkata 75 days, Motihari 26 days.
Year-over-year progress
Kolkata has improved by 76 AQI points (42.9%) from 2017 to 2024; Motihari has improved by 106 AQI points (47.7%) over the same window. The worst recorded day for Kolkata reached AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23; Motihari hit AQI 448 at Gandak Colony (BSPCB) on 2022-11-17.
Station-level disparity
Kolkata spans 7 CPCB stations with a 56-point spread (min 95, max 151); Motihari spans 1 stations with a 0-point spread (min 153, max 153).