Prayagraj vs Purnia
Side-by-side air quality comparison between Prayagraj 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, Prayagraj averaged an AQI of 80 while Purnia averaged 133 — a 53-point (66%) gap, with Purnia the more polluted and Prayagraj the cleaner of the two. On 602 days when both cities reported, Prayagraj was cleaner on 422 of them; the average daily gap was 71 AQI points.
Seasonality & days
Prayagraj peaks in November, while Purnia peaks in January. Prayagraj logged 0.2% Severe days and 48% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Prayagraj 69 days, Purnia 14 days.
Year-over-year progress
Prayagraj has improved by 42 AQI points (34.4%) from 2021 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Prayagraj reached AQI 416 at Nagar Nigam (UPPCB) on 2021-11-08; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Prayagraj spans 3 CPCB stations with a 9-point spread (min 96, max 105); Purnia spans 1 stations with a 0-point spread (min 176, max 176).