Perundurai vs Purnia
Side-by-side air quality comparison between Perundurai 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, Perundurai averaged an AQI of 75 while Purnia averaged 133 — a 58-point (77%) gap, with Purnia the more polluted and Perundurai the cleaner of the two. On 50 days when both cities reported, Perundurai was cleaner on 47 of them; the average daily gap was 110 AQI points.
Seasonality & days
Perundurai peaks in November, while Purnia peaks in January. Perundurai logged 0% Severe days and 80.7% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Perundurai 13 days, Purnia 14 days.
Year-over-year progress
The worst recorded day for Perundurai reached AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Perundurai spans 1 CPCB stations with a 0-point spread (min 75, max 75); Purnia spans 1 stations with a 0-point spread (min 176, max 176).