Ludhiana vs Puducherry
Side-by-side air quality comparison between Ludhiana and Puducherry.
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 | Puducherry |
|---|---|---|
| PM2.5(µg/m³) | 71.50 | 16.40 |
| PM10(µg/m³) | 100.40 | 19.20 |
| NO₂(µg/m³) | 31.30 | 18.50 |
| SO₂(µg/m³) | 17.00 | 8.80 |
| O₃(µg/m³) | 62.00 | 37.00 |
| CO(µg/m³) | 748.00 | 394.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2021, Ludhiana averaged an AQI of 117 while Puducherry averaged 55 — a 62-point (113%) gap, with Ludhiana the more polluted and Puducherry the cleaner of the two. On 324 days when both cities reported, Puducherry was cleaner on 294 of them; the average daily gap was 67 AQI points.
Seasonality & days
Ludhiana peaks in November, while Puducherry peaks in December. Ludhiana logged 0.3% Severe days and 53.599999999999994% Good-or-Satisfactory days; Puducherry was 0% Severe and 95.4% Good-or-Satisfactory. Longest clean-air streaks: Ludhiana 53 days, Puducherry 117 days.
Year-over-year progress
Ludhiana has improved by 79 AQI points (40.3%) from 2017 to 2021; Puducherry has worsened by 1 AQI points (1.9%) over the same window. The worst recorded day for Ludhiana reached AQI 488 at Punjab Agricultural University (PPCB) on 2018-06-14; Puducherry hit AQI 274 at Jawahar Nagar (PPCC) on 2022-10-25.
Station-level disparity
Ludhiana spans 1 CPCB stations with a 0-point spread (min 118, max 118); Puducherry spans 1 stations with a 0-point spread (min 56, max 56).
Verdict
🏆 Puducherry has better air quality with an AQI of 27 compared to Ludhiana's 139. That's a significant difference of 112 points.