Kanpur vs Purnia
Side-by-side air quality comparison between Kanpur 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 | Kanpur | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 77.50 | 105.90 |
| PM10(µg/m³) | 129.00 | 109.00 |
| NO₂(µg/m³) | 51.00 | 25.20 |
| SO₂(µg/m³) | 13.40 | 20.10 |
| O₃(µg/m³) | 41.00 | 67.00 |
| CO(µg/m³) | 367.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kanpur averaged an AQI of 109 while Purnia averaged 133 — a 24-point (22%) gap, with Purnia the more polluted and Kanpur the cleaner of the two. On 603 days when both cities reported, Kanpur was cleaner on 356 of them; the average daily gap was 67 AQI points.
Seasonality & days
Kanpur peaks in November, while Purnia peaks in January. Kanpur logged 3.8% Severe days and 36.2% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Kanpur 70 days, Purnia 14 days.
Year-over-year progress
Kanpur has improved by 96 AQI points (46.8%) from 2016 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Kanpur reached AQI 482 at Nehru Nagar (UPPCB) on 2017-12-29; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Kanpur spans 4 CPCB stations with a 54-point spread (min 111, max 165); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Kanpur has better air quality with an AQI of 159 compared to Purnia's 253. That's a significant difference of 94 points.