Kannur vs Ratlam
Side-by-side air quality comparison between Kannur 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 | Kannur | Ratlam |
|---|---|---|
| PM2.5(µg/m³) | 5.70 | 25.00 |
| PM10(µg/m³) | 11.30 | 40.30 |
| NO₂(µg/m³) | 3.30 | 8.90 |
| SO₂(µg/m³) | 1.10 | 16.30 |
| O₃(µg/m³) | 51.00 | 44.00 |
| CO(µg/m³) | 153.00 | 194.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kannur averaged an AQI of 65 while Ratlam averaged 113 — a 48-point (74%) gap, with Ratlam the more polluted and Kannur the cleaner of the two. On 1288 days when both cities reported, Kannur was cleaner on 1007 of them; the average daily gap was 45 AQI points.
Seasonality & days
Kannur peaks in February, while Ratlam peaks in November. Kannur logged 0% Severe days and 92% Good-or-Satisfactory days; Ratlam was 0% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Kannur 103 days, Ratlam 59 days.
Year-over-year progress
Kannur has worsened by 11 AQI points (20.4%) from 2020 to 2024; Ratlam has improved by 19 AQI points (14.4%) over the same window. The worst recorded day for Kannur reached AQI 258 at Thavakkara Kannur (PCB) on 2021-04-14; Ratlam hit AQI 302 at Shasthri Nagar Ratlam (Lab) on 2020-11-11.
Station-level disparity
Kannur spans 1 CPCB stations with a 0-point spread (min 66, max 66); Ratlam spans 1 stations with a 0-point spread (min 103, max 103).
Verdict
🏆 Kannur has better air quality with an AQI of 11 compared to Ratlam's 42.