Palwal vs Purnia
Side-by-side air quality comparison between Palwal 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 | Palwal | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 62.40 | 105.90 |
| PM10(µg/m³) | 136.40 | 109.00 |
| NO₂(µg/m³) | 19.70 | 25.20 |
| SO₂(µg/m³) | 10.50 | 20.10 |
| O₃(µg/m³) | 66.00 | 67.00 |
| CO(µg/m³) | 503.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Palwal averaged an AQI of 95 while Purnia averaged 133 — a 38-point (40%) gap, with Purnia the more polluted and Palwal the cleaner of the two. On 813 days when both cities reported, Palwal was cleaner on 619 of them; the average daily gap was 96 AQI points.
Seasonality & days
Palwal peaks in November, while Purnia peaks in January. Palwal logged 0.2% Severe days and 47.800000000000004% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Palwal 37 days, Purnia 14 days.
Year-over-year progress
Palwal has improved by 91 AQI points (48.9%) from 2019 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Palwal reached AQI 465 at Shyam Nagar (HSPCB) on 2019-11-14; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Palwal spans 1 CPCB stations with a 0-point spread (min 120, max 120); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Palwal has better air quality with an AQI of 125 compared to Purnia's 253. That's a significant difference of 128 points.