Belgaum vs Kollam
Side-by-side air quality comparison between Belgaum 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 | Belgaum | Kollam |
|---|---|---|
| PM2.5(µg/m³) | 11.10 | 5.50 |
| PM10(µg/m³) | 19.90 | 7.90 |
| NO₂(µg/m³) | 6.70 | 3.80 |
| SO₂(µg/m³) | 1.40 | 1.60 |
| O₃(µg/m³) | 38.00 | 33.00 |
| CO(µg/m³) | 113.00 | 96.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Belgaum averaged an AQI of 58 while Kollam averaged 84 — a 26-point (45%) gap, with Kollam the more polluted and Belgaum the cleaner of the two. On 618 days when both cities reported, Belgaum was cleaner on 399 of them; the average daily gap was 35 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Belgaum logged 0% Severe days and 84.3% Good-or-Satisfactory days; Kollam was 0% Severe and 81% Good-or-Satisfactory. Longest clean-air streaks: Belgaum 71 days, Kollam 65 days.
Year-over-year progress
Belgaum has improved by 33 AQI points (36.3%) from 2022 to 2024; Kollam has improved by 2 AQI points (2.3%) over the same window. The worst recorded day for Belgaum reached AQI 248 at Ramteerth Nagar (KSPCB) on 2024-12-14; Kollam hit AQI 272 at Polayathode Kollam (PCB) on 2024-04-06.
Station-level disparity
Belgaum spans 1 CPCB stations with a 0-point spread (min 71, max 71); Kollam spans 1 stations with a 0-point spread (min 84, max 84).
Verdict
🏆 Kollam has better air quality with an AQI of 9 compared to Belgaum's 20.