Khanna vs Purnia
Side-by-side air quality comparison between Khanna 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 | Khanna | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 57.60 | 105.90 |
| PM10(µg/m³) | 86.80 | 109.00 |
| NO₂(µg/m³) | 25.80 | 25.20 |
| SO₂(µg/m³) | 15.90 | 20.10 |
| O₃(µg/m³) | 75.00 | 67.00 |
| CO(µg/m³) | 753.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Khanna averaged an AQI of 102 while Purnia averaged 133 — a 31-point (30%) gap, with Purnia the more polluted and Khanna the cleaner of the two. On 538 days when both cities reported, Khanna was cleaner on 378 of them; the average daily gap was 77 AQI points.
Seasonality & days
Khanna peaks in November, while Purnia peaks in January. Khanna logged 0% Severe days and 61.599999999999994% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Khanna 60 days, Purnia 14 days.
Year-over-year progress
Khanna has worsened by 4 AQI points (4.1%) from 2023 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Khanna reached AQI 297 at Kalal Majra (PPCB) on 2023-11-09; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Khanna spans 1 CPCB stations with a 0-point spread (min 100, max 100); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Khanna has better air quality with an AQI of 96 compared to Purnia's 253. That's a significant difference of 157 points.