Ooty vs Shillong
Side-by-side air quality comparison between Ooty and Shillong.
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 | Shillong |
|---|---|---|
| PM2.5(µg/m³) | 4.90 | 17.90 |
| PM10(µg/m³) | 5.30 | 21.40 |
| NO₂(µg/m³) | 5.70 | 3.10 |
| SO₂(µg/m³) | 0.90 | 6.20 |
| O₃(µg/m³) | 38.00 | 118.00 |
| CO(µg/m³) | 132.00 | 304.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ooty averaged an AQI of 58 while Shillong averaged 75 — a 17-point (29%) gap, with Shillong the more polluted and Ooty the cleaner of the two. On 216 days when both cities reported, Shillong was cleaner on 125 of them; the average daily gap was 37 AQI points.
Seasonality & days
Ooty peaks in May, while Shillong peaks in February. Ooty logged 0% Severe days and 94.2% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Ooty 22 days, Shillong 113 days.
Year-over-year progress
Ooty is essentially flat from 2022 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Ooty reached AQI 164 at Bombay Castel (TNPCB) on 2024-12-17; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Ooty spans 1 CPCB stations with a 0-point spread (min 59, max 59); Shillong spans 2 stations with a 2-point spread (min 42, max 44).
Verdict
🏆 Ooty has better air quality with an AQI of 8 compared to Shillong's 30.