Ariyalur vs Cuddalore
Side-by-side air quality comparison between Ariyalur and Cuddalore.
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
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Ariyalur | Cuddalore |
|---|---|---|
| PM2.5(µg/m³) | 6.80 | 15.00 |
| PM10(µg/m³) | 8.30 | 18.20 |
| NO₂(µg/m³) | 7.50 | 15.90 |
| SO₂(µg/m³) | 6.50 | 10.00 |
| O₃(µg/m³) | 43.00 | 39.00 |
| CO(µg/m³) | 133.00 | 353.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Cuddalore averaged 52 — a 6-point (13%) gap, with Cuddalore the more polluted and Ariyalur the cleaner of the two. On 274 days when both cities reported, Ariyalur was cleaner on 182 of them; the average daily gap was 23 AQI points.
Seasonality & days
Ariyalur peaks in March, while Cuddalore peaks in January. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Cuddalore was 0% Severe and 90.6% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Cuddalore 34 days.
Year-over-year progress
The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Cuddalore hit AQI 329 at Kudikadu (TNPCB) on 2024-04-05.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Cuddalore spans 2 stations with a 11-point spread (min 46, max 57).
Verdict
🏆 Ariyalur has better air quality with an AQI of 11 compared to Cuddalore's 25.