Korba vs Salem
Side-by-side air quality comparison between Korba and Salem.
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 | Korba | Salem |
|---|---|---|
| PM2.5(µg/m³) | 48.10 | 13.70 |
| PM10(µg/m³) | 56.60 | 16.40 |
| NO₂(µg/m³) | 15.00 | 15.30 |
| SO₂(µg/m³) | 20.40 | 9.30 |
| O₃(µg/m³) | 86.00 | 37.00 |
| CO(µg/m³) | 325.00 | 240.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Korba averaged an AQI of 67 while Salem averaged 68 — a 1-point (1%) gap, with Salem the more polluted and Korba the cleaner of the two. On 330 days when both cities reported, Salem was cleaner on 164 of them; the average daily gap was 36 AQI points.
Seasonality & days
Korba peaks in January, while Salem peaks in April. Korba logged 0% Severe days and 78.8% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Korba 83 days, Salem 17 days.
Year-over-year progress
Korba has improved by 19 AQI points (22.1%) from 2022 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Korba reached AQI 313 at Urja Nagar (CECB) on 2023-01-04; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Korba spans 2 CPCB stations with a 13-point spread (min 62, max 75); Salem spans 1 stations with a 0-point spread (min 73, max 73).
Verdict
🏆 Salem has better air quality with an AQI of 23 compared to Korba's 81. That's a significant difference of 58 points.