Siliguri vs Thiruvananthapuram
Side-by-side air quality comparison between Siliguri 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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Siliguri averaged an AQI of 81 while Thiruvananthapuram averaged 56 — a 25-point (45%) gap, with Siliguri the more polluted and Thiruvananthapuram the cleaner of the two. On 1862 days when both cities reported, Thiruvananthapuram was cleaner on 1212 of them; the average daily gap was 55 AQI points.
Seasonality & days
Siliguri peaks in February, while Thiruvananthapuram peaks in January. Siliguri logged 0.1% Severe days and 61.8% Good-or-Satisfactory days; Thiruvananthapuram was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Siliguri 180 days, Thiruvananthapuram 172 days.
Year-over-year progress
Siliguri has improved by 39 AQI points (32.5%) from 2018 to 2024; Thiruvananthapuram has improved by 11 AQI points (16.4%) over the same window. The worst recorded day for Siliguri reached AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08; Thiruvananthapuram hit AQI 387 at Plammoodu Thiruvananthapuram (PCB) on 2021-08-30.
Station-level disparity
Siliguri spans 1 CPCB stations with a 0-point spread (min 107, max 107); Thiruvananthapuram spans 2 stations with a 7-point spread (min 57, max 64).