Prayagraj vs Shillong
Side-by-side air quality comparison between Prayagraj and Shillong.
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 Shillong averaged 75 — a 5-point (7%) gap, with Prayagraj the more polluted and Shillong the cleaner of the two. On 627 days when both cities reported, Shillong was cleaner on 569 of them; the average daily gap was 82 AQI points.
Seasonality & days
Prayagraj peaks in November, while Shillong peaks in February. Prayagraj logged 0.2% Severe days and 48% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Prayagraj 69 days, Shillong 113 days.
Year-over-year progress
Prayagraj has improved by 42 AQI points (34.4%) from 2021 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Prayagraj reached AQI 416 at Nagar Nigam (UPPCB) on 2021-11-08; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Prayagraj spans 3 CPCB stations with a 9-point spread (min 96, max 105); Shillong spans 2 stations with a 2-point spread (min 42, max 44).