Chandigarh vs Shillong
Side-by-side air quality comparison between Chandigarh 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
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Chandigarh | Shillong |
|---|---|---|
| PM2.5(µg/m³) | 46.30 | 17.90 |
| PM10(µg/m³) | 63.60 | 21.40 |
| NO₂(µg/m³) | 30.10 | 3.10 |
| SO₂(µg/m³) | 10.30 | 6.20 |
| O₃(µg/m³) | 64.00 | 118.00 |
| CO(µg/m³) | 602.00 | 304.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chandigarh averaged an AQI of 153 while Shillong averaged 75 — a 78-point (104%) gap, with Chandigarh the more polluted and Shillong the cleaner of the two. On 988 days when both cities reported, Shillong was cleaner on 920 of them; the average daily gap was 94 AQI points.
Seasonality & days
Chandigarh peaks in January, while Shillong peaks in February. Chandigarh logged 0.3% Severe days and 39.9% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Chandigarh 92 days, Shillong 113 days.
Year-over-year progress
Chandigarh has worsened by 27 AQI points (21.4%) from 2019 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Chandigarh reached AQI 452 at Sector-53 (CPCC) on 2022-11-09; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Chandigarh spans 3 CPCB stations with a 43-point spread (min 107, max 150); Shillong spans 2 stations with a 2-point spread (min 42, max 44).
Verdict
🏆 Shillong has better air quality with an AQI of 30 compared to Chandigarh's 78.