Davanagere vs Kolkata
Side-by-side air quality comparison between Davanagere 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 | Davanagere | Kolkata |
|---|---|---|
| PM2.5(µg/m³) | 7.30 | 64.70 |
| PM10(µg/m³) | 9.70 | 69.40 |
| NO₂(µg/m³) | 6.50 | 18.10 |
| SO₂(µg/m³) | 2.00 | 13.10 |
| O₃(µg/m³) | 35.00 | 86.00 |
| CO(µg/m³) | 153.00 | 428.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Davanagere averaged an AQI of 57 while Kolkata averaged 101 — a 44-point (77%) gap, with Kolkata the more polluted and Davanagere the cleaner of the two. On 826 days when both cities reported, Davanagere was cleaner on 786 of them; the average daily gap was 90 AQI points.
Seasonality & days
Davanagere peaks in March, while Kolkata peaks in January. Davanagere logged 0% Severe days and 89.6% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Davanagere 35 days, Kolkata 75 days.
Year-over-year progress
Davanagere has worsened by 5 AQI points (9.6%) from 2021 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Davanagere reached AQI 233 at Devaraj Urs Badavane (KSPCB) on 2023-11-15; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Davanagere spans 1 CPCB stations with a 0-point spread (min 57, max 57); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).
Verdict
🏆 Davanagere has better air quality with an AQI of 12 compared to Kolkata's 117. That's a significant difference of 105 points.