Chennai vs Korba
Side-by-side air quality comparison between Chennai and Korba.
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 | Chennai | Korba |
|---|---|---|
| PM2.5(µg/m³) | 11.70 | 48.10 |
| PM10(µg/m³) | 13.10 | 56.60 |
| NO₂(µg/m³) | 14.20 | 15.00 |
| SO₂(µg/m³) | 10.10 | 20.40 |
| O₃(µg/m³) | 56.00 | 86.00 |
| CO(µg/m³) | 308.00 | 325.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Korba averaged 67 — a 1-point (1%) gap, with Chennai the more polluted and Korba the cleaner of the two. On 356 days when both cities reported, Korba was cleaner on 269 of them; the average daily gap was 45 AQI points.
Seasonality & days
Chennai peaks in December, while Korba peaks in January. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Korba was 0% Severe and 78.8% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Korba 83 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Korba has improved by 19 AQI points (22.1%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Korba hit AQI 313 at Urja Nagar (CECB) on 2023-01-04.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Korba spans 2 stations with a 13-point spread (min 62, max 75).
Verdict
🏆 Chennai has better air quality with an AQI of 20 compared to Korba's 81. That's a significant difference of 61 points.