Cuddalore vs Ramanathapuram
Side-by-side air quality comparison between Cuddalore 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 | Cuddalore | Ramanathapuram |
|---|---|---|
| PM2.5(µg/m³) | 13.30 | 4.20 |
| PM10(µg/m³) | 16.90 | 6.20 |
| NO₂(µg/m³) | 13.00 | 2.70 |
| SO₂(µg/m³) | 16.90 | 3.80 |
| O₃(µg/m³) | 54.00 | 37.00 |
| CO(µg/m³) | 226.00 | 142.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Cuddalore averaged an AQI of 52 while Ramanathapuram averaged 42 — a 10-point (24%) gap, with Cuddalore the more polluted and Ramanathapuram the cleaner of the two. On 241 days when both cities reported, Ramanathapuram was cleaner on 193 of them; the average daily gap was 25 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Cuddalore logged 0% Severe days and 90.6% Good-or-Satisfactory days; Ramanathapuram was 0% Severe and 94.4% Good-or-Satisfactory. Longest clean-air streaks: Cuddalore 34 days, Ramanathapuram 46 days.
Year-over-year progress
The worst recorded day for Cuddalore reached AQI 329 at Kudikadu (TNPCB) on 2024-04-05; Ramanathapuram hit AQI 246 at Chalai Bazaar (TNPCB) on 2022-12-07.
Station-level disparity
Cuddalore spans 2 CPCB stations with a 11-point spread (min 46, max 57); Ramanathapuram spans 1 stations with a 0-point spread (min 48, max 48).
Verdict
🏆 Ramanathapuram has better air quality with an AQI of 7 compared to Cuddalore's 22.