Samastipur vs Siliguri
Side-by-side air quality comparison between Samastipur 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 | Samastipur | Siliguri |
|---|---|---|
| PM2.5(µg/m³) | 118.00 | 82.20 |
| PM10(µg/m³) | 134.60 | 105.70 |
| NO₂(µg/m³) | 61.60 | 15.40 |
| SO₂(µg/m³) | 18.30 | 6.50 |
| O₃(µg/m³) | 5.00 | 95.00 |
| CO(µg/m³) | 837.00 | 539.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Samastipur averaged an AQI of 134 while Siliguri averaged 81 — a 53-point (65%) gap, with Samastipur the more polluted and Siliguri the cleaner of the two. On 462 days when both cities reported, Siliguri was cleaner on 413 of them; the average daily gap was 96 AQI points.
Seasonality & days
Samastipur peaks in January, while Siliguri peaks in February. Samastipur logged 1.4% Severe days and 23.400000000000002% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Samastipur 9 days, Siliguri 180 days.
Year-over-year progress
Samastipur has improved by 84 AQI points (38.5%) from 2022 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Samastipur reached AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Samastipur spans 1 CPCB stations with a 0-point spread (min 177, max 177); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).
Verdict
🏆 Siliguri has better air quality with an AQI of 174 compared to Samastipur's 293. That's a significant difference of 119 points.