Purnia vs Rourkela
Side-by-side air quality comparison between Purnia and Rourkela.
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 | Purnia | Rourkela |
|---|---|---|
| PM2.5(µg/m³) | 88.20 | 36.80 |
| PM10(µg/m³) | 98.70 | 51.50 |
| NO₂(µg/m³) | 2.30 | 1.40 |
| SO₂(µg/m³) | 24.60 | 15.10 |
| O₃(µg/m³) | 239.00 | 200.00 |
| CO(µg/m³) | 359.00 | 257.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Purnia averaged an AQI of 133 while Rourkela averaged 115 — a 18-point (16%) gap, with Purnia the more polluted and Rourkela the cleaner of the two. On 297 days when both cities reported, Purnia was cleaner on 160 of them; the average daily gap was 65 AQI points.
Seasonality & days
Purnia peaks in January, while Rourkela peaks in November. Purnia logged 3.7% Severe days and 33.699999999999996% Good-or-Satisfactory days; Rourkela was 0% Severe and 32.9% Good-or-Satisfactory. Longest clean-air streaks: Purnia 14 days, Rourkela 60 days.
Year-over-year progress
Purnia has improved by 163 AQI points (55.1%) from 2021 to 2024; Rourkela has improved by 112 AQI points (49.3%) over the same window. The worst recorded day for Purnia reached AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15; Rourkela hit AQI 344 at Raghunathpali (OSPCB) on 2024-01-01.
Station-level disparity
Purnia spans 1 CPCB stations with a 0-point spread (min 176, max 176); Rourkela spans 3 stations with a 29-point spread (min 106, max 135).
Verdict
🏆 Rourkela has better air quality with an AQI of 62 compared to Purnia's 194. That's a significant difference of 132 points.