Gaya vs Purnia
Side-by-side air quality comparison between Gaya 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 | Gaya | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 61.20 | 105.90 |
| PM10(µg/m³) | 73.80 | 109.00 |
| NO₂(µg/m³) | 16.60 | 25.20 |
| SO₂(µg/m³) | 13.20 | 20.10 |
| O₃(µg/m³) | 86.00 | 67.00 |
| CO(µg/m³) | 309.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gaya averaged an AQI of 110 while Purnia averaged 133 — a 23-point (21%) gap, with Purnia the more polluted and Gaya the cleaner of the two. On 880 days when both cities reported, Purnia was cleaner on 537 of them; the average daily gap was 57 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Gaya logged 1.7% Severe days and 32% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Gaya 52 days, Purnia 14 days.
Year-over-year progress
Gaya has improved by 89 AQI points (44.7%) from 2016 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Gaya reached AQI 500 at Collectorate (BSPCB) on 2016-10-15; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Gaya spans 3 CPCB stations with a 85-point spread (min 88, max 173); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Gaya has better air quality with an AQI of 105 compared to Purnia's 253. That's a significant difference of 148 points.