Kolhapur vs Kolkata
Side-by-side air quality comparison between Kolhapur and Kolkata.
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
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Kolhapur | Kolkata |
|---|---|---|
| PM2.5(µg/m³) | 13.60 | 64.70 |
| PM10(µg/m³) | 24.30 | 69.40 |
| NO₂(µg/m³) | 7.90 | 18.10 |
| SO₂(µg/m³) | 3.30 | 13.10 |
| O₃(µg/m³) | 37.00 | 86.00 |
| CO(µg/m³) | 130.00 | 428.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kolhapur averaged an AQI of 100 while Kolkata averaged 101 — a 1-point (1%) gap, with Kolkata the more polluted and Kolhapur the cleaner of the two. On 364 days when both cities reported, Kolhapur was cleaner on 206 of them; the average daily gap was 53 AQI points.
Seasonality & days
Kolhapur peaks in November, while Kolkata peaks in January. Kolhapur logged 0% Severe days and 46.400000000000006% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Kolhapur 81 days, Kolkata 75 days.
Year-over-year progress
The worst recorded day for Kolhapur reached AQI 321 at Shivaji University (MPCB) on 2024-11-12; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Kolhapur spans 2 CPCB stations with a 19-point spread (min 90, max 109); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).
Verdict
🏆 Kolhapur has better air quality with an AQI of 24 compared to Kolkata's 117. That's a significant difference of 93 points.