Katni vs Purnia
Side-by-side air quality comparison between Katni 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, Katni averaged an AQI of 105 while Purnia averaged 133 — a 28-point (27%) gap, with Purnia the more polluted and Katni the cleaner of the two. On 828 days when both cities reported, Katni was cleaner on 550 of them; the average daily gap was 63 AQI points.
Seasonality & days
Katni peaks in November, while Purnia peaks in January. Katni logged 0% Severe days and 39.3% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Katni 62 days, Purnia 14 days.
Year-over-year progress
Katni has improved by 93 AQI points (47%) from 2019 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Katni reached AQI 350 at Gole Bazar (MPPCB) on 2019-11-01; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Katni spans 1 CPCB stations with a 0-point spread (min 137, max 137); Purnia spans 1 stations with a 0-point spread (min 176, max 176).