Bangalore vs Salem
Side-by-side air quality comparison between Bangalore 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, Bangalore averaged an AQI of 74 while Salem averaged 68 — a 6-point (9%) gap, with Bangalore the more polluted and Salem the cleaner of the two. On 394 days when both cities reported, Salem was cleaner on 332 of them; the average daily gap was 56 AQI points.
Seasonality & days
Bangalore peaks in March, while Salem peaks in April. Bangalore logged 0.5% Severe days and 42.6% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Bangalore 31 days, Salem 17 days.
Year-over-year progress
Bangalore has improved by 26 AQI points (26%) from 2016 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Bangalore reached AQI 500 at Silk Board (KSPCB) on 2024-01-10; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Bangalore spans 14 CPCB stations with a 50-point spread (min 49, max 99); Salem spans 1 stations with a 0-point spread (min 73, max 73).