Ooty vs Siliguri
Side-by-side air quality comparison between Ooty and Siliguri.
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 | Siliguri |
|---|---|---|
| PM2.5(µg/m³) | 4.90 | 77.80 |
| PM10(µg/m³) | 5.30 | 98.30 |
| NO₂(µg/m³) | 5.70 | 11.30 |
| SO₂(µg/m³) | 0.90 | 6.80 |
| O₃(µg/m³) | 38.00 | 115.00 |
| CO(µg/m³) | 132.00 | 523.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ooty averaged an AQI of 58 while Siliguri averaged 81 — a 23-point (40%) gap, with Siliguri the more polluted and Ooty the cleaner of the two. On 308 days when both cities reported, Ooty was cleaner on 201 of them; the average daily gap was 40 AQI points.
Seasonality & days
Ooty peaks in May, while Siliguri peaks in February. Ooty logged 0% Severe days and 94.2% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Ooty 22 days, Siliguri 180 days.
Year-over-year progress
Ooty is essentially flat from 2022 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Ooty reached AQI 164 at Bombay Castel (TNPCB) on 2024-12-17; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Ooty spans 1 CPCB stations with a 0-point spread (min 59, max 59); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).
Verdict
🏆 Ooty has better air quality with an AQI of 8 compared to Siliguri's 160. That's a significant difference of 152 points.