Alwar vs Salem
Side-by-side air quality comparison between Alwar 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, Alwar averaged an AQI of 88 while Salem averaged 68 — a 20-point (29%) gap, with Alwar the more polluted and Salem the cleaner of the two. On 390 days when both cities reported, Salem was cleaner on 263 of them; the average daily gap was 36 AQI points.
Seasonality & days
Alwar peaks in November, while Salem peaks in April. Alwar logged 0% Severe days and 70.2% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Alwar 97 days, Salem 17 days.
Year-over-year progress
Alwar has improved by 125 AQI points (58.7%) from 2017 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Alwar reached AQI 356 at Moti Doongri (RSPCB) on 2017-11-11; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Alwar spans 1 CPCB stations with a 0-point spread (min 95, max 95); Salem spans 1 stations with a 0-point spread (min 73, max 73).