Rourkela vs Siliguri
Side-by-side air quality comparison between Rourkela 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 | Rourkela | Siliguri |
|---|---|---|
| PM2.5(µg/m³) | 111.80 | 77.80 |
| PM10(µg/m³) | 123.90 | 98.30 |
| NO₂(µg/m³) | 35.70 | 11.30 |
| SO₂(µg/m³) | 23.90 | 6.80 |
| O₃(µg/m³) | 66.00 | 115.00 |
| CO(µg/m³) | 408.00 | 523.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Rourkela averaged an AQI of 115 while Siliguri averaged 81 — a 34-point (42%) gap, with Rourkela the more polluted and Siliguri the cleaner of the two. On 388 days when both cities reported, Siliguri was cleaner on 331 of them; the average daily gap was 64 AQI points.
Seasonality & days
Rourkela peaks in November, while Siliguri peaks in February. Rourkela logged 0% Severe days and 32.9% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Rourkela 60 days, Siliguri 180 days.
Year-over-year progress
Rourkela has improved by 112 AQI points (49.3%) from 2022 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Rourkela reached AQI 344 at Raghunathpali (OSPCB) on 2024-01-01; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Rourkela spans 3 CPCB stations with a 29-point spread (min 106, max 135); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).
Verdict
🏆 Siliguri has better air quality with an AQI of 160 compared to Rourkela's 273. That's a significant difference of 113 points.