Chandigarh vs Ratlam
Side-by-side air quality comparison between Chandigarh 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 | Chandigarh | Ratlam |
|---|---|---|
| PM2.5(µg/m³) | 50.90 | 31.00 |
| PM10(µg/m³) | 66.80 | 47.60 |
| NO₂(µg/m³) | 44.60 | 8.60 |
| SO₂(µg/m³) | 8.10 | 15.80 |
| O₃(µg/m³) | 11.00 | 55.00 |
| CO(µg/m³) | 714.00 | 205.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chandigarh averaged an AQI of 153 while Ratlam averaged 113 — a 40-point (35%) gap, with Chandigarh the more polluted and Ratlam the cleaner of the two. On 1726 days when both cities reported, Ratlam was cleaner on 1186 of them; the average daily gap was 62 AQI points.
Seasonality & days
Chandigarh peaks in January, while Ratlam peaks in November. Chandigarh logged 0.3% Severe days and 39.9% Good-or-Satisfactory days; Ratlam was 0% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Chandigarh 92 days, Ratlam 59 days.
Year-over-year progress
Chandigarh has worsened by 27 AQI points (21.4%) from 2019 to 2024; Ratlam has improved by 19 AQI points (14.4%) over the same window. The worst recorded day for Chandigarh reached AQI 452 at Sector-53 (CPCC) on 2022-11-09; Ratlam hit AQI 302 at Shasthri Nagar Ratlam (Lab) on 2020-11-11.
Station-level disparity
Chandigarh spans 3 CPCB stations with a 43-point spread (min 107, max 150); Ratlam spans 1 stations with a 0-point spread (min 103, max 103).
Verdict
🏆 Ratlam has better air quality with an AQI of 53 compared to Chandigarh's 85.