Ariyalur vs Ramanathapuram
Side-by-side air quality comparison between Ariyalur and Ramanathapuram.
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 | Ramanathapuram |
|---|---|---|
| PM2.5(µg/m³) | 6.90 | 5.80 |
| PM10(µg/m³) | 8.80 | 8.80 |
| NO₂(µg/m³) | 8.10 | 4.80 |
| SO₂(µg/m³) | 5.20 | 4.10 |
| O₃(µg/m³) | 41.00 | 31.00 |
| CO(µg/m³) | 133.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Ramanathapuram averaged 42 — a 4-point (10%) gap, with Ariyalur the more polluted and Ramanathapuram the cleaner of the two. On 488 days when both cities reported, Ramanathapuram was cleaner on 297 of them; the average daily gap was 20 AQI points.
Seasonality & days
Ariyalur peaks in March, while Ramanathapuram peaks in January. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Ramanathapuram was 0% Severe and 94.4% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Ramanathapuram 46 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Ramanathapuram has improved by 18 AQI points (30%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Ramanathapuram hit AQI 246 at Chalai Bazaar (TNPCB) on 2022-12-07.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Ramanathapuram spans 1 stations with a 0-point spread (min 48, max 48).
Verdict
🏆 Ramanathapuram has better air quality with an AQI of 10 compared to Ariyalur's 12.