Sagar vs Salem
Side-by-side air quality comparison between Sagar 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, Sagar averaged an AQI of 96 while Salem averaged 68 — a 28-point (41%) gap, with Sagar the more polluted and Salem the cleaner of the two. On 205 days when both cities reported, Salem was cleaner on 168 of them; the average daily gap was 61 AQI points.
Seasonality & days
Sagar peaks in November, while Salem peaks in April. Sagar logged 0% Severe days and 69.9% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Sagar 57 days, Salem 17 days.
Year-over-year progress
Sagar has worsened by 24 AQI points (33.3%) from 2020 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Sagar reached AQI 347 at Civil Lines (MPPCB) on 2024-12-25; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Sagar spans 2 CPCB stations with a 45-point spread (min 73, max 118); Salem spans 1 stations with a 0-point spread (min 73, max 73).