Purnia vs Saharsa
Side-by-side air quality comparison between Purnia and Saharsa.
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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Purnia averaged an AQI of 133 while Saharsa averaged 139 — a 6-point (5%) gap, with Saharsa the more polluted and Purnia the cleaner of the two. On 727 days when both cities reported, Purnia was cleaner on 427 of them; the average daily gap was 49 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Purnia logged 3.7% Severe days and 33.699999999999996% Good-or-Satisfactory days; Saharsa was 1.4% Severe and 28.4% Good-or-Satisfactory. Longest clean-air streaks: Purnia 14 days, Saharsa 20 days.
Year-over-year progress
Purnia has improved by 163 AQI points (55.1%) from 2021 to 2024; Saharsa has improved by 139 AQI points (50%) over the same window. The worst recorded day for Purnia reached AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15; Saharsa hit AQI 454 at Police Line (BSPCB) on 2022-12-13.
Station-level disparity
Purnia spans 1 CPCB stations with a 0-point spread (min 176, max 176); Saharsa spans 1 stations with a 0-point spread (min 188, max 188).