Muzaffarpur vs Purnia
Side-by-side air quality comparison between Muzaffarpur 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 | Muzaffarpur | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 120.60 | 105.90 |
| PM10(µg/m³) | 135.00 | 109.00 |
| NO₂(µg/m³) | 48.60 | 25.20 |
| SO₂(µg/m³) | 19.60 | 20.10 |
| O₃(µg/m³) | 54.00 | 67.00 |
| CO(µg/m³) | 873.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Muzaffarpur averaged an AQI of 151 while Purnia averaged 133 — a 18-point (14%) gap, with Muzaffarpur the more polluted and Purnia the cleaner of the two. On 878 days when both cities reported, Purnia was cleaner on 608 of them; the average daily gap was 60 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Muzaffarpur logged 4.5% Severe days and 30.900000000000002% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Muzaffarpur 26 days, Purnia 14 days.
Year-over-year progress
Muzaffarpur has improved by 62 AQI points (29.1%) from 2016 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Muzaffarpur reached AQI 482 at Collectorate (BSPCB) on 2016-01-01; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Muzaffarpur spans 3 CPCB stations with a 14-point spread (min 171, max 185); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Purnia has better air quality with an AQI of 253 compared to Muzaffarpur's 301.