Ariyalur vs Siliguri
Side-by-side air quality comparison between Ariyalur and Siliguri.
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, Ariyalur averaged an AQI of 46 while Siliguri averaged 81 — a 35-point (76%) gap, with Siliguri the more polluted and Ariyalur the cleaner of the two. On 309 days when both cities reported, Ariyalur was cleaner on 247 of them; the average daily gap was 41 AQI points.
Seasonality & days
Ariyalur peaks in March, while Siliguri peaks in February. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Siliguri 180 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).