Puducherry vs Thiruvananthapuram
Side-by-side air quality comparison between Puducherry 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 | Puducherry | Thiruvananthapuram |
|---|---|---|
| PM2.5(µg/m³) | 14.10 | 5.30 |
| PM10(µg/m³) | 16.70 | 9.50 |
| NO₂(µg/m³) | 19.70 | 1.50 |
| SO₂(µg/m³) | 9.00 | 0.40 |
| O₃(µg/m³) | 32.00 | 38.00 |
| CO(µg/m³) | 404.00 | 102.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Puducherry averaged an AQI of 55 while Thiruvananthapuram averaged 56 — a 1-point (2%) gap, with Thiruvananthapuram the more polluted and Puducherry the cleaner of the two. On 1017 days when both cities reported, Puducherry was cleaner on 668 of them; the average daily gap was 25 AQI points.
Seasonality & days
Puducherry peaks in December, while Thiruvananthapuram peaks in January. Puducherry logged 0% Severe days and 95.4% Good-or-Satisfactory days; Thiruvananthapuram was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Puducherry 117 days, Thiruvananthapuram 172 days.
Year-over-year progress
Puducherry has worsened by 1 AQI points (1.9%) from 2021 to 2024; Thiruvananthapuram has improved by 11 AQI points (16.4%) over the same window. The worst recorded day for Puducherry reached AQI 274 at Jawahar Nagar (PPCC) on 2022-10-25; Thiruvananthapuram hit AQI 387 at Plammoodu Thiruvananthapuram (PCB) on 2021-08-30.
Station-level disparity
Puducherry spans 1 CPCB stations with a 0-point spread (min 56, max 56); 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 Puducherry's 24.