Bhopal vs Purnia
Side-by-side air quality comparison between Bhopal 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 | Bhopal | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 27.90 | 112.00 |
| PM10(µg/m³) | 45.20 | 115.70 |
| NO₂(µg/m³) | 6.80 | 31.10 |
| SO₂(µg/m³) | 5.70 | 18.40 |
| O₃(µg/m³) | 67.00 | 42.00 |
| CO(µg/m³) | 260.00 | 756.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhopal averaged an AQI of 114 while Purnia averaged 133 — a 19-point (17%) gap, with Purnia the more polluted and Bhopal the cleaner of the two. On 595 days when both cities reported, Bhopal was cleaner on 372 of them; the average daily gap was 71 AQI points.
Seasonality & days
Bhopal peaks in November, while Purnia peaks in January. Bhopal logged 0% Severe days and 38.4% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Bhopal 47 days, Purnia 14 days.
Year-over-year progress
Bhopal has improved by 39 AQI points (25.5%) from 2019 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Bhopal reached AQI 392 at T T Nagar (MPPCB) on 2022-01-06; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Bhopal spans 3 CPCB stations with a 18-point spread (min 111, max 129); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Bhopal has better air quality with an AQI of 47 compared to Purnia's 274. That's a significant difference of 227 points.