Hisar vs Salem
Side-by-side air quality comparison between Hisar 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, Hisar averaged an AQI of 136 while Salem averaged 68 — a 68-point (100%) gap, with Hisar the more polluted and Salem the cleaner of the two. On 178 days when both cities reported, Salem was cleaner on 162 of them; the average daily gap was 88 AQI points.
Seasonality & days
Hisar peaks in November, while Salem peaks in April. Hisar logged 1.6% Severe days and 29.700000000000003% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Hisar 34 days, Salem 17 days.
Year-over-year progress
Hisar has improved by 39 AQI points (22.3%) from 2019 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Hisar reached AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Hisar spans 1 CPCB stations with a 0-point spread (min 168, max 168); Salem spans 1 stations with a 0-point spread (min 73, max 73).