Ludhiana vs Thiruvananthapuram
Side-by-side air quality comparison between Ludhiana and Thiruvananthapuram.
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 | Thiruvananthapuram |
|---|---|---|
| PM2.5(µg/m³) | 71.50 | 5.30 |
| PM10(µg/m³) | 100.40 | 9.50 |
| NO₂(µg/m³) | 31.30 | 1.50 |
| SO₂(µg/m³) | 17.00 | 0.40 |
| O₃(µg/m³) | 62.00 | 38.00 |
| CO(µg/m³) | 748.00 | 102.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2021, Ludhiana averaged an AQI of 117 while Thiruvananthapuram averaged 56 — a 61-point (109%) gap, with Ludhiana the more polluted and Thiruvananthapuram the cleaner of the two. On 1436 days when both cities reported, Thiruvananthapuram was cleaner on 1116 of them; the average daily gap was 63 AQI points.
Seasonality & days
Ludhiana peaks in November, while Thiruvananthapuram peaks in January. Ludhiana logged 0.3% Severe days and 53.599999999999994% Good-or-Satisfactory days; Thiruvananthapuram was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Ludhiana 53 days, Thiruvananthapuram 172 days.
Year-over-year progress
Ludhiana has improved by 79 AQI points (40.3%) from 2017 to 2021; Thiruvananthapuram has improved by 11 AQI points (16.4%) over the same window. The worst recorded day for Ludhiana reached AQI 488 at Punjab Agricultural University (PPCB) on 2018-06-14; Thiruvananthapuram hit AQI 387 at Plammoodu Thiruvananthapuram (PCB) on 2021-08-30.
Station-level disparity
Ludhiana spans 1 CPCB stations with a 0-point spread (min 118, max 118); Thiruvananthapuram spans 2 stations with a 7-point spread (min 57, max 64).
Verdict
🏆 Thiruvananthapuram has better air quality with an AQI of 10 compared to Ludhiana's 139. That's a significant difference of 129 points.