Ooty vs Tirunelveli
Side-by-side air quality comparison between Ooty and Tirunelveli.
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 | Tirunelveli |
|---|---|---|
| PM2.5(µg/m³) | 4.40 | 4.30 |
| PM10(µg/m³) | 5.20 | 5.30 |
| NO₂(µg/m³) | 7.00 | 6.20 |
| SO₂(µg/m³) | 0.90 | 1.80 |
| O₃(µg/m³) | 31.00 | 26.00 |
| CO(µg/m³) | 124.00 | 139.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ooty averaged an AQI of 58 while Tirunelveli averaged 30 — a 28-point (93%) gap, with Ooty the more polluted and Tirunelveli the cleaner of the two. On 83 days when both cities reported, Tirunelveli was cleaner on 74 of them; the average daily gap was 32 AQI points.
Seasonality & days
Ooty peaks in May, while Tirunelveli peaks in October. Ooty logged 0% Severe days and 94.2% Good-or-Satisfactory days; Tirunelveli was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Ooty 22 days, Tirunelveli 31 days.
Year-over-year progress
The worst recorded day for Ooty reached AQI 164 at Bombay Castel (TNPCB) on 2024-12-17; Tirunelveli hit AQI 42 at Municipal Corporation Office (TNPCB) on 2024-10-30.
Station-level disparity
Ooty spans 1 CPCB stations with a 0-point spread (min 59, max 59); Tirunelveli spans 1 stations with a 0-point spread (min 30, max 30).
Verdict
Both Ooty and Tirunelveli have the same AQI of 7 right now.