Bhilai vs Purnia
Side-by-side air quality comparison between Bhilai and Purnia.
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 | Bhilai | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 46.40 | 105.90 |
| PM10(µg/m³) | 52.30 | 109.00 |
| NO₂(µg/m³) | 43.70 | 25.20 |
| SO₂(µg/m³) | 70.60 | 20.10 |
| O₃(µg/m³) | 42.00 | 67.00 |
| CO(µg/m³) | 675.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhilai averaged an AQI of 73 while Purnia averaged 133 — a 60-point (82%) gap, with Purnia the more polluted and Bhilai the cleaner of the two. On 616 days when both cities reported, Bhilai was cleaner on 515 of them; the average daily gap was 89 AQI points.
Seasonality & days
Bhilai peaks in November, while Purnia peaks in January. Bhilai logged 0% Severe days and 71.6% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Bhilai 119 days, Purnia 14 days.
Year-over-year progress
Bhilai has worsened by 8 AQI points (12.3%) from 2021 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Bhilai reached AQI 288 at Hathkhoj (CECB) on 2023-12-26; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Bhilai spans 3 CPCB stations with a 25-point spread (min 59, max 84); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Bhilai has better air quality with an AQI of 78 compared to Purnia's 253. That's a significant difference of 175 points.