Ariyalur vs Nagapattinam
Side-by-side air quality comparison between Ariyalur and Nagapattinam.
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 Nagapattinam averaged 60 — a 14-point (30%) gap, with Nagapattinam the more polluted and Ariyalur the cleaner of the two. On 35 days when both cities reported, Ariyalur was cleaner on 22 of them; the average daily gap was 13 AQI points.
Seasonality & days
Ariyalur peaks in March, while Nagapattinam peaks in November. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Nagapattinam was 0% Severe and 91.5% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Nagapattinam 8 days.
Year-over-year progress
The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Nagapattinam hit AQI 113 at Velippalayam (TNPCB) on 2024-12-16.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Nagapattinam spans 1 stations with a 0-point spread (min 60, max 60).