Dhanbad vs Salem
Side-by-side air quality comparison between Dhanbad 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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dhanbad averaged an AQI of 161 while Salem averaged 68 — a 93-point (137%) gap, with Dhanbad the more polluted and Salem the cleaner of the two. On 72 days when both cities reported, Salem was cleaner on 70 of them; the average daily gap was 108 AQI points.
Seasonality & days
Dhanbad peaks in November, while Salem peaks in April. Dhanbad logged 0.4% Severe days and 3.1% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Dhanbad 2 days, Salem 17 days.
Year-over-year progress
The worst recorded day for Dhanbad reached AQI 436 at Kalakusuma (DMC) on 2024-04-28; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Dhanbad spans 2 CPCB stations with a 12-point spread (min 156, max 168); Salem spans 1 stations with a 0-point spread (min 73, max 73).