Kollam vs Puducherry
Side-by-side air quality comparison between Kollam and Puducherry.
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 | Kollam | Puducherry |
|---|---|---|
| PM2.5(µg/m³) | 4.60 | 12.20 |
| PM10(µg/m³) | 7.10 | 14.50 |
| NO₂(µg/m³) | 4.40 | 18.70 |
| SO₂(µg/m³) | 1.50 | 9.00 |
| O₃(µg/m³) | 30.00 | 33.00 |
| CO(µg/m³) | 89.00 | 402.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kollam averaged an AQI of 84 while Puducherry averaged 55 — a 29-point (53%) gap, with Kollam the more polluted and Puducherry the cleaner of the two. On 1173 days when both cities reported, Puducherry was cleaner on 985 of them; the average daily gap was 34 AQI points.
Seasonality & days
Kollam peaks in January, while Puducherry peaks in December. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Puducherry was 0% Severe and 95.4% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Puducherry 117 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Puducherry has worsened by 1 AQI points (1.9%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Puducherry hit AQI 274 at Jawahar Nagar (PPCC) on 2022-10-25.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Puducherry spans 1 stations with a 0-point spread (min 56, max 56).
Verdict
🏆 Kollam has better air quality with an AQI of 8 compared to Puducherry's 20.