Howrah vs Korba
Side-by-side air quality comparison between Howrah 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 | Howrah | Korba |
|---|---|---|
| PM2.5(µg/m³) | 64.70 | 48.10 |
| PM10(µg/m³) | 69.40 | 56.60 |
| NO₂(µg/m³) | 18.10 | 15.00 |
| SO₂(µg/m³) | 13.10 | 20.40 |
| O₃(µg/m³) | 86.00 | 86.00 |
| CO(µg/m³) | 421.00 | 325.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Howrah averaged an AQI of 126 while Korba averaged 67 — a 59-point (88%) gap, with Howrah the more polluted and Korba the cleaner of the two. On 356 days when both cities reported, Korba was cleaner on 290 of them; the average daily gap was 85 AQI points.
Seasonality & days
Howrah peaks in December, while Korba peaks in January. Howrah logged 0.7% Severe days and 48.7% Good-or-Satisfactory days; Korba was 0% Severe and 78.8% Good-or-Satisfactory. Longest clean-air streaks: Howrah 120 days, Korba 83 days.
Year-over-year progress
Howrah has improved by 32 AQI points (20.3%) from 2016 to 2024; Korba has improved by 19 AQI points (22.1%) over the same window. The worst recorded day for Howrah reached AQI 500 at Ghusuri (WBPCB) on 2017-04-15; Korba hit AQI 313 at Urja Nagar (CECB) on 2023-01-04.
Station-level disparity
Howrah spans 5 CPCB stations with a 116-point spread (min 111, max 227); Korba spans 2 stations with a 13-point spread (min 62, max 75).
Verdict
🏆 Korba has better air quality with an AQI of 81 compared to Howrah's 117.