Guwahati vs Ooty
Side-by-side air quality comparison between Guwahati 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 | Guwahati | Ooty |
|---|---|---|
| PM2.5(µg/m³) | 32.70 | 4.40 |
| PM10(µg/m³) | 36.10 | 5.20 |
| NO₂(µg/m³) | 6.40 | 7.00 |
| SO₂(µg/m³) | 4.00 | 0.90 |
| O₃(µg/m³) | 84.00 | 31.00 |
| CO(µg/m³) | 393.00 | 124.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Guwahati averaged an AQI of 123 while Ooty averaged 58 — a 65-point (112%) gap, with Guwahati the more polluted and Ooty the cleaner of the two. On 603 days when both cities reported, Ooty was cleaner on 547 of them; the average daily gap was 99 AQI points.
Seasonality & days
Guwahati peaks in January, while Ooty peaks in May. Guwahati logged 0.1% Severe days and 44.9% Good-or-Satisfactory days; Ooty was 0% Severe and 94.2% Good-or-Satisfactory. Longest clean-air streaks: Guwahati 105 days, Ooty 22 days.
Year-over-year progress
Guwahati has worsened by 14 AQI points (12.8%) from 2019 to 2024; Ooty is essentially flat over the same window. The worst recorded day for Guwahati reached AQI 420 at Railway Colony (PCBA) on 2023-01-15; Ooty hit AQI 164 at Bombay Castel (TNPCB) on 2024-12-17.
Station-level disparity
Guwahati spans 4 CPCB stations with a 26-point spread (min 118, max 144); 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 Guwahati's 55.