Noida vs Shillong
Side-by-side air quality comparison between Noida 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, Noida averaged an AQI of 182 while Shillong averaged 75 — a 107-point (143%) gap, with Noida the more polluted and Shillong the cleaner of the two. On 996 days when both cities reported, Shillong was cleaner on 985 of them; the average daily gap was 172 AQI points.
Seasonality & days
Noida peaks in November, while Shillong peaks in February. Noida logged 8.9% Severe days and 16.5% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Noida 14 days, Shillong 113 days.
Year-over-year progress
Noida has improved by 79 AQI points (30.3%) from 2017 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Noida reached AQI 500 at Sector-1 (UPPCB) on 2019-11-01; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Noida spans 4 CPCB stations with a 15-point spread (min 195, max 210); Shillong spans 2 stations with a 2-point spread (min 42, max 44).