Kolkata vs Pimpri-Chinchwad
Side-by-side air quality comparison between Kolkata and Pimpri-Chinchwad.
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 | Kolkata | Pimpri-Chinchwad |
|---|---|---|
| PM2.5(µg/m³) | 71.70 | 15.00 |
| PM10(µg/m³) | 75.70 | 30.40 |
| NO₂(µg/m³) | 22.30 | 10.90 |
| SO₂(µg/m³) | 12.00 | 7.90 |
| O₃(µg/m³) | 60.00 | 31.00 |
| CO(µg/m³) | 392.00 | 128.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kolkata averaged an AQI of 101 while Pimpri-Chinchwad averaged 114 — a 13-point (13%) gap, with Pimpri-Chinchwad the more polluted and Kolkata the cleaner of the two. On 366 days when both cities reported, Pimpri-Chinchwad was cleaner on 193 of them; the average daily gap was 51 AQI points.
Seasonality & days
Kolkata peaks in January, while Pimpri-Chinchwad peaks in November. Kolkata logged 1% Severe days and 47.800000000000004% Good-or-Satisfactory days; Pimpri-Chinchwad was 0% Severe and 42% Good-or-Satisfactory. Longest clean-air streaks: Kolkata 75 days, Pimpri-Chinchwad 82 days.
Year-over-year progress
The worst recorded day for Kolkata reached AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23; Pimpri-Chinchwad hit AQI 341 at Thergaon Pimpri (MPCB) on 2024-11-23.
Station-level disparity
Kolkata spans 7 CPCB stations with a 56-point spread (min 95, max 151); Pimpri-Chinchwad spans 4 stations with a 20-point spread (min 107, max 127).
Verdict
🏆 Pimpri-Chinchwad has better air quality with an AQI of 30 compared to Kolkata's 140. That's a significant difference of 110 points.