Bhiwāni vs Kolkata
Side-by-side air quality comparison between Bhiwāni 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 | Bhiwāni | Kolkata |
|---|---|---|
| PM2.5(µg/m³) | 71.70 | 71.70 |
| PM10(µg/m³) | 184.90 | 75.70 |
| NO₂(µg/m³) | 44.30 | 22.30 |
| SO₂(µg/m³) | 11.10 | 12.00 |
| O₃(µg/m³) | 30.00 | 60.00 |
| CO(µg/m³) | 564.00 | 392.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhiwāni averaged an AQI of 134 while Kolkata averaged 101 — a 33-point (33%) gap, with Bhiwāni the more polluted and Kolkata the cleaner of the two. On 1645 days when both cities reported, Kolkata was cleaner on 860 of them; the average daily gap was 77 AQI points.
Seasonality & days
Bhiwāni peaks in November, while Kolkata peaks in January. Bhiwāni logged 0.6% Severe days and 36.4% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Bhiwāni 33 days, Kolkata 75 days.
Year-over-year progress
Bhiwāni has improved by 15 AQI points (10.1%) from 2019 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Bhiwāni reached AQI 471 at HB Colony (HSPCB) on 2019-11-13; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Bhiwāni spans 1 CPCB stations with a 0-point spread (min 144, max 144); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).
Verdict
🏆 Kolkata has better air quality with an AQI of 140 compared to Bhiwāni's 157.