Bhubaneswar vs Kolkata
Side-by-side air quality comparison between Bhubaneswar 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 | Bhubaneswar | Kolkata |
|---|---|---|
| PM2.5(µg/m³) | 34.20 | 71.70 |
| PM10(µg/m³) | 37.10 | 75.70 |
| NO₂(µg/m³) | 14.10 | 22.30 |
| SO₂(µg/m³) | 8.70 | 12.00 |
| O₃(µg/m³) | 68.00 | 60.00 |
| CO(µg/m³) | 429.00 | 392.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhubaneswar averaged an AQI of 115 while Kolkata averaged 101 — a 14-point (14%) gap, with Bhubaneswar the more polluted and Kolkata the cleaner of the two. On 359 days when both cities reported, Bhubaneswar was cleaner on 196 of them; the average daily gap was 39 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Bhubaneswar logged 0% Severe days and 48.8% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Bhubaneswar 27 days, Kolkata 75 days.
Year-over-year progress
The worst recorded day for Bhubaneswar reached AQI 341 at Lingraj Mandir (OSPCB) on 2024-01-09; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Bhubaneswar spans 2 CPCB stations with a 2-point spread (min 114, max 116); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).
Verdict
🏆 Bhubaneswar has better air quality with an AQI of 58 compared to Kolkata's 140. That's a significant difference of 82 points.