Ambala vs Shillong
Side-by-side air quality comparison between Ambala 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 | Ambala | Shillong |
|---|---|---|
| PM2.5(µg/m³) | 47.60 | 20.40 |
| PM10(µg/m³) | 70.10 | 23.70 |
| NO₂(µg/m³) | 23.90 | 4.20 |
| SO₂(µg/m³) | 10.30 | 5.70 |
| O₃(µg/m³) | 56.00 | 99.00 |
| CO(µg/m³) | 618.00 | 305.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ambala averaged an AQI of 94 while Shillong averaged 75 — a 19-point (25%) gap, with Ambala the more polluted and Shillong the cleaner of the two. On 918 days when both cities reported, Shillong was cleaner on 810 of them; the average daily gap was 95 AQI points.
Seasonality & days
Ambala peaks in November, while Shillong peaks in February. Ambala logged 0.2% Severe days and 46.5% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Ambala 44 days, Shillong 113 days.
Year-over-year progress
Ambala has improved by 52 AQI points (35.6%) from 2019 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Ambala reached AQI 452 at Patti Mehar (HSPCB) on 2020-11-04; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Ambala spans 1 CPCB stations with a 0-point spread (min 126, max 126); Shillong spans 2 stations with a 2-point spread (min 42, max 44).
Verdict
🏆 Shillong has better air quality with an AQI of 34 compared to Ambala's 80.