Kozhikode vs Ratlam
Side-by-side air quality comparison between Kozhikode and Ratlam.
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 | Kozhikode | Ratlam |
|---|---|---|
| PM2.5(µg/m³) | 4.60 | 31.00 |
| PM10(µg/m³) | 10.30 | 47.60 |
| NO₂(µg/m³) | 0.50 | 8.60 |
| SO₂(µg/m³) | 0.30 | 15.80 |
| O₃(µg/m³) | 64.00 | 55.00 |
| CO(µg/m³) | 217.00 | 205.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2023, Kozhikode averaged an AQI of 78 while Ratlam averaged 113 — a 35-point (45%) gap, with Ratlam the more polluted and Kozhikode the cleaner of the two. On 877 days when both cities reported, Kozhikode was cleaner on 714 of them; the average daily gap was 48 AQI points.
Seasonality & days
Kozhikode peaks in January, while Ratlam peaks in November. Kozhikode logged 0.1% Severe days and 99% Good-or-Satisfactory days; Ratlam was 0% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Kozhikode 83 days, Ratlam 59 days.
Year-over-year progress
Kozhikode has worsened by 29 AQI points (59.2%) from 2020 to 2023; Ratlam has improved by 19 AQI points (14.4%) over the same window. The worst recorded day for Kozhikode reached AQI 417 at Palayam Kozhikode (PCB) on 2021-01-25; Ratlam hit AQI 302 at Shasthri Nagar Ratlam (Lab) on 2020-11-11.
Station-level disparity
Kozhikode spans 1 CPCB stations with a 0-point spread (min 59, max 59); Ratlam spans 1 stations with a 0-point spread (min 103, max 103).
Verdict
🏆 Kozhikode has better air quality with an AQI of 10 compared to Ratlam's 53.