Katihar vs Perundurai
Side-by-side air quality comparison between Katihar and Perundurai.
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, Katihar averaged an AQI of 123 while Perundurai averaged 75 — a 48-point (64%) gap, with Katihar the more polluted and Perundurai the cleaner of the two. On 50 days when both cities reported, Perundurai was cleaner on 48 of them; the average daily gap was 109 AQI points.
Seasonality & days
Katihar peaks in December, while Perundurai peaks in November. Katihar logged 3.1% Severe days and 26.9% Good-or-Satisfactory days; Perundurai was 0% Severe and 80.7% Good-or-Satisfactory. Longest clean-air streaks: Katihar 19 days, Perundurai 13 days.
Year-over-year progress
The worst recorded day for Katihar reached AQI 465 at Mirchaibari (BSPCB) on 2023-01-23; Perundurai hit AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12.
Station-level disparity
Katihar spans 1 CPCB stations with a 0-point spread (min 185, max 185); Perundurai spans 1 stations with a 0-point spread (min 75, max 75).