Ooty vs Purnia
Side-by-side air quality comparison between Ooty and Purnia.
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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ooty averaged an AQI of 58 while Purnia averaged 133 — a 75-point (129%) gap, with Purnia the more polluted and Ooty the cleaner of the two. On 475 days when both cities reported, Ooty was cleaner on 437 of them; the average daily gap was 124 AQI points.
Seasonality & days
Ooty peaks in May, while Purnia peaks in January. Ooty logged 0% Severe days and 94.2% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Ooty 22 days, Purnia 14 days.
Year-over-year progress
Ooty is essentially flat from 2022 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Ooty reached AQI 164 at Bombay Castel (TNPCB) on 2024-12-17; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Ooty spans 1 CPCB stations with a 0-point spread (min 59, max 59); Purnia spans 1 stations with a 0-point spread (min 176, max 176).