Kollam vs Kozhikode
Side-by-side air quality comparison between Kollam and Kozhikode.
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 | Kozhikode |
|---|---|---|
| PM2.5(µg/m³) | 4.90 | 5.60 |
| PM10(µg/m³) | 7.80 | 13.30 |
| NO₂(µg/m³) | 1.20 | 0.60 |
| SO₂(µg/m³) | 0.60 | 0.30 |
| O₃(µg/m³) | 48.00 | 63.00 |
| CO(µg/m³) | 99.00 | 135.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kollam averaged an AQI of 84 while Kozhikode averaged 78 — a 6-point (8%) gap, with Kollam the more polluted and Kozhikode the cleaner of the two. On 814 days when both cities reported, Kozhikode was cleaner on 647 of them; the average daily gap was 32 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Kozhikode was 0.1% Severe and 99% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Kozhikode 83 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Kozhikode has worsened by 29 AQI points (59.2%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Kozhikode hit AQI 417 at Palayam Kozhikode (PCB) on 2021-01-25.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Kozhikode spans 1 stations with a 0-point spread (min 59, max 59).
Verdict
🏆 Kollam has better air quality with an AQI of 8 compared to Kozhikode's 13.