Ludhiana vs Surat
Side-by-side air quality comparison between Ludhiana and Surat.
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 | Surat |
|---|---|---|
| PM2.5(µg/m³) | 81.70 | 23.90 |
| PM10(µg/m³) | 109.20 | 45.10 |
| NO₂(µg/m³) | 40.40 | 22.90 |
| SO₂(µg/m³) | 15.20 | 38.50 |
| O₃(µg/m³) | 35.00 | 33.00 |
| CO(µg/m³) | 797.00 | 249.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2021, Ludhiana averaged an AQI of 117 while Surat averaged 83 — a 34-point (41%) gap, with Ludhiana the more polluted and Surat the cleaner of the two.
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; Surat was 0% Severe and 55.9% Good-or-Satisfactory. Longest clean-air streaks: Ludhiana 53 days, Surat 55 days.
Year-over-year progress
Ludhiana has improved by 79 AQI points (40.3%) from 2017 to 2021; Surat has improved by 139 AQI points (62.6%) over the same window. The worst recorded day for Ludhiana reached AQI 488 at Punjab Agricultural University (PPCB) on 2018-06-14; Surat hit AQI 384 at Science Center (SMC) on 2023-08-19.
Station-level disparity
Ludhiana spans 1 CPCB stations with a 0-point spread (min 118, max 118); Surat spans 1 stations with a 0-point spread (min 123, max 123).
Verdict
🏆 Surat has better air quality with an AQI of 45 compared to Ludhiana's 173. That's a significant difference of 128 points.