Chandigarh vs Ludhiana
Side-by-side air quality comparison between Chandigarh and Ludhiana.
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 | Ludhiana |
|---|---|---|
| PM2.5(µg/m³) | 46.30 | 71.50 |
| PM10(µg/m³) | 63.60 | 100.40 |
| NO₂(µg/m³) | 30.10 | 31.30 |
| SO₂(µg/m³) | 10.30 | 17.00 |
| O₃(µg/m³) | 64.00 | 62.00 |
| CO(µg/m³) | 602.00 | 748.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chandigarh averaged an AQI of 153 while Ludhiana averaged 117 — a 36-point (31%) gap, with Chandigarh the more polluted and Ludhiana the cleaner of the two. On 827 days when both cities reported, Chandigarh was cleaner on 515 of them; the average daily gap was 34 AQI points.
Seasonality & days
Chandigarh peaks in January, while Ludhiana peaks in November. Chandigarh logged 0.3% Severe days and 39.9% Good-or-Satisfactory days; Ludhiana was 0.3% Severe and 53.599999999999994% Good-or-Satisfactory. Longest clean-air streaks: Chandigarh 92 days, Ludhiana 53 days.
Year-over-year progress
Chandigarh has worsened by 27 AQI points (21.4%) from 2019 to 2024; Ludhiana has improved by 79 AQI points (40.3%) over the same window. The worst recorded day for Chandigarh reached AQI 452 at Sector-53 (CPCC) on 2022-11-09; Ludhiana hit AQI 488 at Punjab Agricultural University (PPCB) on 2018-06-14.
Station-level disparity
Chandigarh spans 3 CPCB stations with a 43-point spread (min 107, max 150); Ludhiana spans 1 stations with a 0-point spread (min 118, max 118).
Verdict
🏆 Chandigarh has better air quality with an AQI of 78 compared to Ludhiana's 139. That's a significant difference of 61 points.