Balasore vs Kolkata
Side-by-side air quality comparison between Balasore 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 | Balasore | Kolkata |
|---|---|---|
| PM2.5(µg/m³) | 50.80 | 48.20 |
| PM10(µg/m³) | 59.80 | 55.50 |
| NO₂(µg/m³) | 11.70 | 6.60 |
| SO₂(µg/m³) | 12.20 | 15.00 |
| O₃(µg/m³) | 110.00 | 155.00 |
| CO(µg/m³) | 501.00 | 485.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Balasore averaged an AQI of 131 while Kolkata averaged 101 — a 30-point (30%) gap, with Balasore the more polluted and Kolkata the cleaner of the two. On 356 days when both cities reported, Kolkata was cleaner on 215 of them; the average daily gap was 35 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Balasore logged 0.2% Severe days and 42.9% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Balasore 29 days, Kolkata 75 days.
Year-over-year progress
Balasore has improved by 58 AQI points (30.7%) from 2023 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Balasore reached AQI 406 at Kalidaspur (OSPCB) on 2024-01-16; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Balasore spans 1 CPCB stations with a 0-point spread (min 141, max 141); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).
Verdict
🏆 Kolkata has better air quality with an AQI of 81 compared to Balasore's 85.