Shillong vs Thrissur
Side-by-side air quality comparison between Shillong and Thrissur.
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, Shillong averaged an AQI of 75 while Thrissur averaged 57 — a 18-point (32%) gap, with Shillong the more polluted and Thrissur the cleaner of the two. On 523 days when both cities reported, Shillong was cleaner on 388 of them; the average daily gap was 33 AQI points.
Seasonality & days
Both cities see their worst air in February on average. Shillong logged 0% Severe days and 92% Good-or-Satisfactory days; Thrissur was 0% Severe and 88.4% Good-or-Satisfactory. Longest clean-air streaks: Shillong 113 days, Thrissur 52 days.
Year-over-year progress
Shillong has worsened by 41 AQI points (120.6%) from 2019 to 2024; Thrissur has improved by 21 AQI points (26.9%) over the same window. The worst recorded day for Shillong reached AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19; Thrissur hit AQI 181 at Corporation Ground Thrissur (PCB) on 2023-01-09.
Station-level disparity
Shillong spans 2 CPCB stations with a 2-point spread (min 42, max 44); Thrissur spans 1 stations with a 0-point spread (min 68, max 68).