Nagapattinam vs Salem
Side-by-side air quality comparison between Nagapattinam 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, Nagapattinam averaged an AQI of 60 while Salem averaged 68 — a 8-point (13%) gap, with Salem the more polluted and Nagapattinam the cleaner of the two. On 25 days when both cities reported, Nagapattinam was cleaner on 17 of them; the average daily gap was 23 AQI points.
Seasonality & days
Nagapattinam peaks in November, while Salem peaks in April. Nagapattinam logged 0% Severe days and 91.5% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Nagapattinam 8 days, Salem 17 days.
Year-over-year progress
The worst recorded day for Nagapattinam reached AQI 113 at Velippalayam (TNPCB) on 2024-12-16; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Nagapattinam spans 1 CPCB stations with a 0-point spread (min 60, max 60); Salem spans 1 stations with a 0-point spread (min 73, max 73).