Korba vs Purnia
Side-by-side air quality comparison between Korba 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, Korba averaged an AQI of 67 while Purnia averaged 133 — a 66-point (99%) gap, with Purnia the more polluted and Korba the cleaner of the two. On 542 days when both cities reported, Korba was cleaner on 459 of them; the average daily gap was 86 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Korba logged 0% Severe days and 78.8% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Korba 83 days, Purnia 14 days.
Year-over-year progress
Korba has improved by 19 AQI points (22.1%) from 2022 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Korba reached AQI 313 at Urja Nagar (CECB) on 2023-01-04; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Korba spans 2 CPCB stations with a 13-point spread (min 62, max 75); Purnia spans 1 stations with a 0-point spread (min 176, max 176).