Salem vs Thanjavur
Side-by-side air quality comparison between Salem and Thanjavur.
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, Salem averaged an AQI of 68 while Thanjavur averaged 42 — a 26-point (62%) gap, with Salem the more polluted and Thanjavur the cleaner of the two. On 34 days when both cities reported, Thanjavur was cleaner on 30 of them; the average daily gap was 25 AQI points.
Seasonality & days
Salem peaks in April, while Thanjavur peaks in November. Salem logged 0% Severe days and 87.1% Good-or-Satisfactory days; Thanjavur was 0% Severe and 98.60000000000001% Good-or-Satisfactory. Longest clean-air streaks: Salem 17 days, Thanjavur 21 days.
Year-over-year progress
The worst recorded day for Salem reached AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15; Thanjavur hit AQI 140 at Parisutham Nagar (TNPCB) on 2024-11-01.
Station-level disparity
Salem spans 1 CPCB stations with a 0-point spread (min 73, max 73); Thanjavur spans 1 stations with a 0-point spread (min 42, max 42).