Kalaburagi vs Kolkata
Side-by-side air quality comparison between Kalaburagi 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 | Kalaburagi | Kolkata |
|---|---|---|
| PM2.5(µg/m³) | 16.80 | 43.70 |
| PM10(µg/m³) | 32.90 | 51.30 |
| NO₂(µg/m³) | 1.10 | 2.40 |
| SO₂(µg/m³) | 2.40 | 11.70 |
| O₃(µg/m³) | 116.00 | 180.00 |
| CO(µg/m³) | 143.00 | 355.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kalaburagi averaged an AQI of 49 while Kolkata averaged 101 — a 52-point (106%) gap, with Kolkata the more polluted and Kalaburagi the cleaner of the two. On 1429 days when both cities reported, Kalaburagi was cleaner on 1231 of them; the average daily gap was 92 AQI points.
Seasonality & days
Kalaburagi peaks in December, while Kolkata peaks in January. Kalaburagi logged 0.6% Severe days and 69.6% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Kalaburagi 120 days, Kolkata 75 days.
Year-over-year progress
Kalaburagi has improved by 56 AQI points (53.3%) from 2018 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Kalaburagi reached AQI 500 at Lal Bahadur Shastri Nagar (KSPCB) on 2020-10-26; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Kalaburagi spans 2 CPCB stations with a 40-point spread (min 43, max 83); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).
Verdict
🏆 Kalaburagi has better air quality with an AQI of 33 compared to Kolkata's 73.