Hassan vs Purnia
Side-by-side air quality comparison between Hassan 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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hassan averaged an AQI of 60 while Purnia averaged 133 — a 73-point (122%) gap, with Purnia the more polluted and Hassan the cleaner of the two. On 638 days when both cities reported, Hassan was cleaner on 598 of them; the average daily gap was 119 AQI points.
Seasonality & days
Hassan peaks in March, while Purnia peaks in January. Hassan logged 0% Severe days and 92.5% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Hassan 51 days, Purnia 14 days.
Year-over-year progress
Hassan has improved by 4 AQI points (6.2%) from 2021 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Hassan reached AQI 212 at BKatihalli (KSPCB) on 2024-05-11; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Hassan spans 1 CPCB stations with a 0-point spread (min 63, max 63); Purnia spans 1 stations with a 0-point spread (min 176, max 176).