Karur vs Salem
Side-by-side air quality comparison between Karur 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, Karur averaged an AQI of 71 while Salem averaged 68 — a 3-point (4%) gap, with Karur the more polluted and Salem the cleaner of the two. On 36 days when both cities reported, Karur was cleaner on 21 of them; the average daily gap was 22 AQI points.
Seasonality & days
Karur peaks in December, while Salem peaks in April. Karur logged 0% Severe days and 80.3% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Karur 34 days, Salem 17 days.
Year-over-year progress
The worst recorded day for Karur reached AQI 149 at Kamadenu Nagar (TNPCB) on 2024-11-26; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Karur spans 1 CPCB stations with a 0-point spread (min 71, max 71); Salem spans 1 stations with a 0-point spread (min 73, max 73).