Ariyalur vs Katihar
Side-by-side air quality comparison between Ariyalur and Katihar.
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, Ariyalur averaged an AQI of 46 while Katihar averaged 123 — a 77-point (167%) gap, with Katihar the more polluted and Ariyalur the cleaner of the two. On 522 days when both cities reported, Ariyalur was cleaner on 494 of them; the average daily gap was 120 AQI points.
Seasonality & days
Ariyalur peaks in March, while Katihar peaks in December. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Katihar 19 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Katihar has improved by 188 AQI points (60.5%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Katihar spans 1 stations with a 0-point spread (min 185, max 185).