Ariyalur vs Ooty
Side-by-side air quality comparison between Ariyalur and Ooty.
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 | Ooty |
|---|---|---|
| PM2.5(µg/m³) | 6.80 | 4.40 |
| PM10(µg/m³) | 8.30 | 5.00 |
| NO₂(µg/m³) | 7.50 | 7.00 |
| SO₂(µg/m³) | 6.50 | 0.90 |
| O₃(µg/m³) | 43.00 | 32.00 |
| CO(µg/m³) | 133.00 | 130.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Ooty averaged 58 — a 12-point (26%) gap, with Ooty the more polluted and Ariyalur the cleaner of the two. On 429 days when both cities reported, Ariyalur was cleaner on 268 of them; the average daily gap was 26 AQI points.
Seasonality & days
Ariyalur peaks in March, while Ooty peaks in May. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Ooty was 0% Severe and 94.2% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Ooty 22 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Ooty is essentially flat over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Ooty hit AQI 164 at Bombay Castel (TNPCB) on 2024-12-17.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Ooty spans 1 stations with a 0-point spread (min 59, max 59).
Verdict
🏆 Ooty has better air quality with an AQI of 7 compared to Ariyalur's 11.