Prayagraj vs Salem
Side-by-side air quality comparison between Prayagraj 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, Prayagraj averaged an AQI of 80 while Salem averaged 68 — a 12-point (18%) gap, with Prayagraj the more polluted and Salem the cleaner of the two. On 207 days when both cities reported, Salem was cleaner on 163 of them; the average daily gap was 49 AQI points.
Seasonality & days
Prayagraj peaks in November, while Salem peaks in April. Prayagraj logged 0.2% Severe days and 48% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Prayagraj 69 days, Salem 17 days.
Year-over-year progress
Prayagraj has improved by 42 AQI points (34.4%) from 2021 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Prayagraj reached AQI 416 at Nagar Nigam (UPPCB) on 2021-11-08; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Prayagraj spans 3 CPCB stations with a 9-point spread (min 96, max 105); Salem spans 1 stations with a 0-point spread (min 73, max 73).