Ooty vs Ramanathapuram
Side-by-side air quality comparison between Ooty 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 | Ooty | Ramanathapuram |
|---|---|---|
| PM2.5(µg/m³) | 4.90 | 5.80 |
| PM10(µg/m³) | 5.30 | 8.80 |
| NO₂(µg/m³) | 5.70 | 4.80 |
| SO₂(µg/m³) | 0.90 | 4.10 |
| O₃(µg/m³) | 38.00 | 31.00 |
| CO(µg/m³) | 132.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ooty averaged an AQI of 58 while Ramanathapuram averaged 42 — a 16-point (38%) gap, with Ooty the more polluted and Ramanathapuram the cleaner of the two. On 513 days when both cities reported, Ramanathapuram was cleaner on 346 of them; the average daily gap was 26 AQI points.
Seasonality & days
Ooty peaks in May, while Ramanathapuram peaks in January. Ooty logged 0% Severe days and 94.2% Good-or-Satisfactory days; Ramanathapuram was 0% Severe and 94.4% Good-or-Satisfactory. Longest clean-air streaks: Ooty 22 days, Ramanathapuram 46 days.
Year-over-year progress
Ooty is essentially flat from 2022 to 2024; Ramanathapuram has improved by 18 AQI points (30%) over the same window. The worst recorded day for Ooty reached AQI 164 at Bombay Castel (TNPCB) on 2024-12-17; Ramanathapuram hit AQI 246 at Chalai Bazaar (TNPCB) on 2022-12-07.
Station-level disparity
Ooty spans 1 CPCB stations with a 0-point spread (min 59, max 59); Ramanathapuram spans 1 stations with a 0-point spread (min 48, max 48).
Verdict
🏆 Ooty has better air quality with an AQI of 8 compared to Ramanathapuram's 10.