Kollam vs Mangalore
Side-by-side air quality comparison between Kollam and Mangalore.
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 | Mangalore |
|---|---|---|
| PM2.5(µg/m³) | 6.20 | 7.30 |
| PM10(µg/m³) | 9.00 | 14.30 |
| NO₂(µg/m³) | 3.70 | 4.70 |
| SO₂(µg/m³) | 1.60 | 1.90 |
| O₃(µg/m³) | 35.00 | 53.00 |
| CO(µg/m³) | 103.00 | 177.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kollam averaged an AQI of 84 while Mangalore averaged 61 — a 23-point (38%) gap, with Kollam the more polluted and Mangalore the cleaner of the two. On 1050 days when both cities reported, Mangalore was cleaner on 722 of them; the average daily gap was 27 AQI points.
Seasonality & days
Kollam peaks in January, while Mangalore peaks in February. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Mangalore was 0% Severe and 87.2% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Mangalore 64 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Mangalore has improved by 9 AQI points (12.9%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Mangalore hit AQI 235 at Kadri (KSPCB) on 2023-11-17.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Mangalore spans 1 stations with a 0-point spread (min 68, max 68).
Verdict
🏆 Kollam has better air quality with an AQI of 10 compared to Mangalore's 14.