Ooty vs Ratlam
Side-by-side air quality comparison between Ooty and Ratlam.
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 | Ratlam |
|---|---|---|
| PM2.5(µg/m³) | 4.90 | 25.00 |
| PM10(µg/m³) | 5.30 | 40.30 |
| NO₂(µg/m³) | 5.70 | 8.90 |
| SO₂(µg/m³) | 0.90 | 16.30 |
| O₃(µg/m³) | 38.00 | 44.00 |
| CO(µg/m³) | 132.00 | 194.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ooty averaged an AQI of 58 while Ratlam averaged 113 — a 55-point (95%) gap, with Ratlam the more polluted and Ooty the cleaner of the two. On 575 days when both cities reported, Ooty was cleaner on 483 of them; the average daily gap was 50 AQI points.
Seasonality & days
Ooty peaks in May, while Ratlam peaks in November. Ooty logged 0% Severe days and 94.2% Good-or-Satisfactory days; Ratlam was 0% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Ooty 22 days, Ratlam 59 days.
Year-over-year progress
Ooty is essentially flat from 2022 to 2024; Ratlam has improved by 19 AQI points (14.4%) over the same window. The worst recorded day for Ooty reached AQI 164 at Bombay Castel (TNPCB) on 2024-12-17; Ratlam hit AQI 302 at Shasthri Nagar Ratlam (Lab) on 2020-11-11.
Station-level disparity
Ooty spans 1 CPCB stations with a 0-point spread (min 59, max 59); Ratlam spans 1 stations with a 0-point spread (min 103, max 103).
Verdict
🏆 Ooty has better air quality with an AQI of 8 compared to Ratlam's 42.