Bhilwara vs Kolkata
Side-by-side air quality comparison between Bhilwara 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 | Bhilwara | Kolkata |
|---|---|---|
| PM2.5(µg/m³) | 21.40 | 71.70 |
| PM10(µg/m³) | 35.40 | 75.70 |
| NO₂(µg/m³) | 8.30 | 22.30 |
| SO₂(µg/m³) | 5.70 | 12.00 |
| O₃(µg/m³) | 51.00 | 60.00 |
| CO(µg/m³) | 150.00 | 392.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhilwara averaged an AQI of 98 while Kolkata averaged 101 — a 3-point (3%) gap, with Kolkata the more polluted and Bhilwara the cleaner of the two. On 326 days when both cities reported, Bhilwara was cleaner on 226 of them; the average daily gap was 49 AQI points.
Seasonality & days
Bhilwara peaks in December, while Kolkata peaks in January. Bhilwara logged 0% Severe days and 54.900000000000006% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Bhilwara 35 days, Kolkata 75 days.
Year-over-year progress
Bhilwara has improved by 37 AQI points (27.4%) from 2023 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Bhilwara reached AQI 331 at Pratap Nagar (RSPCB) on 2023-12-27; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Bhilwara spans 1 CPCB stations with a 0-point spread (min 111, max 111); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).
Verdict
🏆 Bhilwara has better air quality with an AQI of 36 compared to Kolkata's 140. That's a significant difference of 104 points.