Ariyalur vs Chapra
Side-by-side air quality comparison between Ariyalur and Chapra.
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 Chapra averaged 149 — a 103-point (224%) gap, with Chapra the more polluted and Ariyalur the cleaner of the two. On 516 days when both cities reported, Ariyalur was cleaner on 502 of them; the average daily gap was 136 AQI points.
Seasonality & days
Ariyalur peaks in March, while Chapra peaks in January. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Chapra was 2.4% Severe and 26.8% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Chapra 14 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Chapra has improved by 181 AQI points (54.8%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Chapra hit AQI 452 at Darshan Nagar (BSPCB) on 2022-12-20.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Chapra spans 1 stations with a 0-point spread (min 195, max 195).