Koppal vs Salem
Side-by-side air quality comparison between Koppal 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 | Koppal | Salem |
|---|---|---|
| PM2.5(µg/m³) | 5.90 | 13.70 |
| PM10(µg/m³) | 9.10 | 16.40 |
| NO₂(µg/m³) | 6.10 | 15.30 |
| SO₂(µg/m³) | 1.30 | 9.30 |
| O₃(µg/m³) | 38.00 | 37.00 |
| CO(µg/m³) | 124.00 | 240.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Koppal averaged an AQI of 65 while Salem averaged 68 — a 3-point (5%) gap, with Salem the more polluted and Koppal the cleaner of the two. On 324 days when both cities reported, Koppal was cleaner on 163 of them; the average daily gap was 28 AQI points.
Seasonality & days
Koppal peaks in February, while Salem peaks in April. Koppal logged 0% Severe days and 85.5% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Koppal 47 days, Salem 17 days.
Year-over-year progress
Koppal has improved by 31 AQI points (32.3%) from 2020 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Koppal reached AQI 384 at Diwator Nagar (KSPCB) on 2023-02-16; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Koppal spans 1 CPCB stations with a 0-point spread (min 70, max 70); Salem spans 1 stations with a 0-point spread (min 73, max 73).
Verdict
🏆 Koppal has better air quality with an AQI of 10 compared to Salem's 23.