Mahād vs Purnia
Side-by-side air quality comparison between Mahād 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 | Mahād | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 15.20 | 105.90 |
| PM10(µg/m³) | 28.80 | 109.00 |
| NO₂(µg/m³) | 8.30 | 25.20 |
| SO₂(µg/m³) | 2.60 | 20.10 |
| O₃(µg/m³) | 32.00 | 67.00 |
| CO(µg/m³) | 136.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Mahād averaged an AQI of 90 while Purnia averaged 133 — a 43-point (48%) gap, with Purnia the more polluted and Mahād the cleaner of the two. On 391 days when both cities reported, Mahād was cleaner on 318 of them; the average daily gap was 67 AQI points.
Seasonality & days
Mahād peaks in November, while Purnia peaks in January. Mahād logged 0% Severe days and 63.699999999999996% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Mahād 49 days, Purnia 14 days.
Year-over-year progress
Mahād has worsened by 6 AQI points (7.1%) from 2023 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Mahād reached AQI 242 at Kamble Tarf Birwadi (MPCB) on 2023-11-19; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Mahād spans 1 CPCB stations with a 0-point spread (min 88, max 88); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Mahād has better air quality with an AQI of 29 compared to Purnia's 253. That's a significant difference of 224 points.