Guwahati vs Siliguri
Side-by-side air quality comparison between Guwahati 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 | Guwahati | Siliguri |
|---|---|---|
| PM2.5(µg/m³) | 31.90 | 85.20 |
| PM10(µg/m³) | 36.00 | 107.60 |
| NO₂(µg/m³) | 5.40 | 14.20 |
| SO₂(µg/m³) | 4.20 | 6.70 |
| O₃(µg/m³) | 97.00 | 98.00 |
| CO(µg/m³) | 393.00 | 546.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Guwahati averaged an AQI of 123 while Siliguri averaged 81 — a 42-point (52%) gap, with Guwahati the more polluted and Siliguri the cleaner of the two. On 1542 days when both cities reported, Siliguri was cleaner on 1104 of them; the average daily gap was 44 AQI points.
Seasonality & days
Guwahati peaks in January, while Siliguri peaks in February. Guwahati logged 0.1% Severe days and 44.9% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Guwahati 105 days, Siliguri 180 days.
Year-over-year progress
Guwahati has worsened by 14 AQI points (12.8%) from 2019 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Guwahati reached AQI 420 at Railway Colony (PCBA) on 2023-01-15; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Guwahati spans 4 CPCB stations with a 26-point spread (min 118, max 144); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).
Verdict
🏆 Guwahati has better air quality with an AQI of 54 compared to Siliguri's 184. That's a significant difference of 130 points.