Siliguri vs Surat
Side-by-side air quality comparison between Siliguri and Surat.
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 | Siliguri | Surat |
|---|---|---|
| PM2.5(µg/m³) | 69.80 | 27.10 |
| PM10(µg/m³) | 90.30 | 53.20 |
| NO₂(µg/m³) | 7.40 | 18.90 |
| SO₂(µg/m³) | 7.00 | 38.80 |
| O₃(µg/m³) | 138.00 | 40.00 |
| CO(µg/m³) | 486.00 | 266.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Siliguri averaged an AQI of 81 while Surat averaged 83 — a 2-point (2%) gap, with Surat the more polluted and Siliguri the cleaner of the two. On 327 days when both cities reported, Siliguri was cleaner on 180 of them; the average daily gap was 66 AQI points.
Seasonality & days
Siliguri peaks in February, while Surat peaks in November. Siliguri logged 0.1% Severe days and 61.8% Good-or-Satisfactory days; Surat was 0% Severe and 55.9% Good-or-Satisfactory. Longest clean-air streaks: Siliguri 180 days, Surat 55 days.
Year-over-year progress
Siliguri has improved by 39 AQI points (32.5%) from 2018 to 2024; Surat has improved by 139 AQI points (62.6%) over the same window. The worst recorded day for Siliguri reached AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08; Surat hit AQI 384 at Science Center (SMC) on 2023-08-19.
Station-level disparity
Siliguri spans 1 CPCB stations with a 0-point spread (min 107, max 107); Surat spans 1 stations with a 0-point spread (min 123, max 123).
Verdict
🏆 Surat has better air quality with an AQI of 54 compared to Siliguri's 133. That's a significant difference of 79 points.