Gadag vs Salem
Side-by-side air quality comparison between Gadag 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 | Gadag | Salem |
|---|---|---|
| PM2.5(µg/m³) | 6.00 | 13.70 |
| PM10(µg/m³) | 10.40 | 16.40 |
| NO₂(µg/m³) | 5.10 | 15.30 |
| SO₂(µg/m³) | 1.30 | 9.30 |
| O₃(µg/m³) | 43.00 | 37.00 |
| CO(µg/m³) | 119.00 | 240.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gadag averaged an AQI of 53 while Salem averaged 68 — a 15-point (28%) gap, with Salem the more polluted and Gadag the cleaner of the two. On 350 days when both cities reported, Gadag was cleaner on 273 of them; the average daily gap was 27 AQI points.
Seasonality & days
Gadag peaks in March, while Salem peaks in April. Gadag logged 0.3% Severe days and 96.1% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Gadag 50 days, Salem 17 days.
Year-over-year progress
Gadag has worsened by 10 AQI points (23.3%) from 2021 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Gadag reached AQI 500 at Panchal Nagar (KSPCB) on 2022-12-10; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Gadag spans 1 CPCB stations with a 0-point spread (min 54, max 54); Salem spans 1 stations with a 0-point spread (min 73, max 73).
Verdict
🏆 Gadag has better air quality with an AQI of 10 compared to Salem's 23.