Ludhiana vs Ratlam
Side-by-side air quality comparison between Ludhiana 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 | Ludhiana | Ratlam |
|---|---|---|
| PM2.5(µg/m³) | 71.50 | 25.00 |
| PM10(µg/m³) | 100.40 | 40.30 |
| NO₂(µg/m³) | 31.30 | 8.90 |
| SO₂(µg/m³) | 17.00 | 16.30 |
| O₃(µg/m³) | 62.00 | 44.00 |
| CO(µg/m³) | 748.00 | 194.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2021, Ludhiana averaged an AQI of 117 while Ratlam averaged 113 — a 4-point (4%) gap, with Ludhiana the more polluted and Ratlam the cleaner of the two. On 874 days when both cities reported, Ratlam was cleaner on 436 of them; the average daily gap was 47 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Ludhiana logged 0.3% Severe days and 53.599999999999994% Good-or-Satisfactory days; Ratlam was 0% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Ludhiana 53 days, Ratlam 59 days.
Year-over-year progress
Ludhiana has improved by 79 AQI points (40.3%) from 2017 to 2021; Ratlam has improved by 19 AQI points (14.4%) over the same window. The worst recorded day for Ludhiana reached AQI 488 at Punjab Agricultural University (PPCB) on 2018-06-14; Ratlam hit AQI 302 at Shasthri Nagar Ratlam (Lab) on 2020-11-11.
Station-level disparity
Ludhiana spans 1 CPCB stations with a 0-point spread (min 118, max 118); Ratlam spans 1 stations with a 0-point spread (min 103, max 103).
Verdict
🏆 Ratlam has better air quality with an AQI of 42 compared to Ludhiana's 139. That's a significant difference of 97 points.