Dindigul vs Siliguri
Side-by-side air quality comparison between Dindigul 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
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Dindigul | Siliguri |
|---|---|---|
| PM2.5(µg/m³) | 18.20 | 82.20 |
| PM10(µg/m³) | 19.70 | 105.70 |
| NO₂(µg/m³) | 28.00 | 15.40 |
| SO₂(µg/m³) | 2.70 | 6.50 |
| O₃(µg/m³) | 1.00 | 95.00 |
| CO(µg/m³) | 215.00 | 539.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dindigul averaged an AQI of 61 while Siliguri averaged 81 — a 20-point (33%) gap, with Siliguri the more polluted and Dindigul the cleaner of the two. On 173 days when both cities reported, Dindigul was cleaner on 105 of them; the average daily gap was 32 AQI points.
Seasonality & days
Both cities see their worst air in February on average. Dindigul logged 0% Severe days and 67.3% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Dindigul 22 days, Siliguri 180 days.
Year-over-year progress
Dindigul has improved by 29 AQI points (32.2%) from 2022 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Dindigul reached AQI 352 at Mendonsa Colony (TNPCB) on 2023-03-12; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Dindigul spans 1 CPCB stations with a 0-point spread (min 102, max 102); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).
Verdict
🏆 Dindigul has better air quality with an AQI of 30 compared to Siliguri's 174. That's a significant difference of 144 points.