Asansol vs Ooty
Side-by-side air quality comparison between Asansol 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 | Asansol | Ooty |
|---|---|---|
| PM2.5(µg/m³) | 89.60 | 4.40 |
| PM10(µg/m³) | 95.50 | 5.20 |
| NO₂(µg/m³) | 48.70 | 7.00 |
| SO₂(µg/m³) | 82.10 | 0.90 |
| O₃(µg/m³) | 39.00 | 31.00 |
| CO(µg/m³) | 708.00 | 124.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Asansol averaged an AQI of 145 while Ooty averaged 58 — a 87-point (150%) gap, with Asansol the more polluted and Ooty the cleaner of the two. On 315 days when both cities reported, Ooty was cleaner on 301 of them; the average daily gap was 120 AQI points.
Seasonality & days
Asansol peaks in December, while Ooty peaks in May. Asansol logged 0% Severe days and 43.3% Good-or-Satisfactory days; Ooty was 0% Severe and 94.2% Good-or-Satisfactory. Longest clean-air streaks: Asansol 44 days, Ooty 22 days.
Year-over-year progress
Asansol has worsened by 12 AQI points (9%) from 2018 to 2024; Ooty is essentially flat over the same window. The worst recorded day for Asansol reached AQI 394 at Court Area (WBPCB) on 2022-12-13; Ooty hit AQI 164 at Bombay Castel (TNPCB) on 2024-12-17.
Station-level disparity
Asansol spans 4 CPCB stations with a 40-point spread (min 123, max 163); 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 Asansol's 199. That's a significant difference of 192 points.