Ariyalur vs Hapur
Side-by-side air quality comparison between Ariyalur and Hapur.
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 Hapur averaged 142 — a 96-point (209%) gap, with Hapur the more polluted and Ariyalur the cleaner of the two. On 577 days when both cities reported, Ariyalur was cleaner on 511 of them; the average daily gap was 90 AQI points.
Seasonality & days
Ariyalur peaks in March, while Hapur peaks in November. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Hapur was 1.9% Severe and 36.2% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Hapur 55 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Hapur has improved by 197 AQI points (58.1%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Hapur hit AQI 477 at Anand Vihar (UPPCB) on 2019-10-31.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Hapur spans 1 stations with a 0-point spread (min 159, max 159).