Delhi vs Shillong
Side-by-side air quality comparison between Delhi 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 | Delhi | Shillong |
|---|---|---|
| PM2.5(µg/m³) | 78.90 | 17.90 |
| PM10(µg/m³) | 153.20 | 21.40 |
| NO₂(µg/m³) | 38.40 | 3.10 |
| SO₂(µg/m³) | 35.10 | 6.20 |
| O₃(µg/m³) | 88.00 | 118.00 |
| CO(µg/m³) | 602.00 | 304.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Delhi averaged an AQI of 210 while Shillong averaged 75 — a 135-point (180%) gap, with Delhi the more polluted and Shillong the cleaner of the two. On 997 days when both cities reported, Shillong was cleaner on 993 of them; the average daily gap was 242 AQI points.
Seasonality & days
Delhi peaks in November, while Shillong peaks in February. Delhi logged 18.7% Severe days and 1.7% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Delhi 3 days, Shillong 113 days.
Year-over-year progress
Delhi has improved by 42 AQI points (16.7%) from 2016 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Delhi reached AQI 500 at Ashok Vihar (DPCC) on 2024-11-18; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Delhi spans 39 CPCB stations with a 84-point spread (min 178, max 262); 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 Delhi's 163. That's a significant difference of 133 points.