Kishanganj vs Purnia
Side-by-side air quality comparison between Kishanganj 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 | Kishanganj | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 99.40 | 112.00 |
| PM10(µg/m³) | 102.00 | 115.70 |
| NO₂(µg/m³) | 19.70 | 31.10 |
| SO₂(µg/m³) | 12.20 | 18.40 |
| O₃(µg/m³) | 59.00 | 42.00 |
| CO(µg/m³) | 768.00 | 756.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kishanganj averaged an AQI of 144 while Purnia averaged 133 — a 11-point (8%) gap, with Kishanganj the more polluted and Purnia the cleaner of the two. On 765 days when both cities reported, Kishanganj was cleaner on 480 of them; the average daily gap was 55 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kishanganj logged 0.2% Severe days and 37.099999999999994% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Kishanganj 23 days, Purnia 14 days.
Year-over-year progress
Kishanganj has improved by 136 AQI points (48.6%) from 2021 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Kishanganj reached AQI 417 at SDM Office Khagra (BSPCB) on 2022-02-01; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Kishanganj spans 1 CPCB stations with a 0-point spread (min 156, max 156); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Kishanganj has better air quality with an AQI of 232 compared to Purnia's 274.