Kanpur vs Kollam
Side-by-side air quality comparison between Kanpur and Kollam.
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 | Kanpur | Kollam |
|---|---|---|
| PM2.5(µg/m³) | 77.50 | 4.70 |
| PM10(µg/m³) | 129.00 | 7.20 |
| NO₂(µg/m³) | 51.00 | 4.00 |
| SO₂(µg/m³) | 13.40 | 1.50 |
| O₃(µg/m³) | 41.00 | 31.00 |
| CO(µg/m³) | 367.00 | 91.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kanpur averaged an AQI of 109 while Kollam averaged 84 — a 25-point (30%) gap, with Kanpur the more polluted and Kollam the cleaner of the two. On 1117 days when both cities reported, Kollam was cleaner on 833 of them; the average daily gap was 77 AQI points.
Seasonality & days
Kanpur peaks in November, while Kollam peaks in January. Kanpur logged 3.8% Severe days and 36.2% Good-or-Satisfactory days; Kollam was 0% Severe and 81% Good-or-Satisfactory. Longest clean-air streaks: Kanpur 70 days, Kollam 65 days.
Year-over-year progress
Kanpur has improved by 96 AQI points (46.8%) from 2016 to 2024; Kollam has improved by 2 AQI points (2.3%) over the same window. The worst recorded day for Kanpur reached AQI 482 at Nehru Nagar (UPPCB) on 2017-12-29; Kollam hit AQI 272 at Polayathode Kollam (PCB) on 2024-04-06.
Station-level disparity
Kanpur spans 4 CPCB stations with a 54-point spread (min 111, max 165); Kollam spans 1 stations with a 0-point spread (min 84, max 84).
Verdict
🏆 Kollam has better air quality with an AQI of 8 compared to Kanpur's 159. That's a significant difference of 151 points.