Kārwār vs Purnia
Side-by-side air quality comparison between Kārwār 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 | Kārwār | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 4.60 | 88.20 |
| PM10(µg/m³) | 10.50 | 98.70 |
| NO₂(µg/m³) | 0.30 | 2.30 |
| SO₂(µg/m³) | 0.40 | 24.60 |
| O₃(µg/m³) | 60.00 | 239.00 |
| CO(µg/m³) | 94.00 | 359.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kārwār averaged an AQI of 55 while Purnia averaged 133 — a 78-point (142%) gap, with Purnia the more polluted and Kārwār the cleaner of the two. On 211 days when both cities reported, Kārwār was cleaner on 200 of them; the average daily gap was 84 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kārwār logged 0% Severe days and 92.7% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Kārwār 34 days, Purnia 14 days.
Year-over-year progress
Kārwār has improved by 72 AQI points (56.7%) from 2023 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Kārwār reached AQI 222 at KHB Colony (KSPCB) on 2023-12-21; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Kārwār spans 1 CPCB stations with a 0-point spread (min 58, max 58); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Kārwār has better air quality with an AQI of 11 compared to Purnia's 194. That's a significant difference of 183 points.