Shillong vs Sirohi
Side-by-side air quality comparison between Shillong and Sirohi.
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 | Shillong | Sirohi |
|---|---|---|
| PM2.5(µg/m³) | 24.90 | 23.50 |
| PM10(µg/m³) | 29.30 | 46.20 |
| NO₂(µg/m³) | 1.20 | 0.80 |
| SO₂(µg/m³) | 4.00 | 3.80 |
| O₃(µg/m³) | 143.00 | 99.00 |
| CO(µg/m³) | 292.00 | 121.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Shillong averaged an AQI of 75 while Sirohi averaged 89 — a 14-point (19%) gap, with Sirohi the more polluted and Shillong the cleaner of the two. On 178 days when both cities reported, Shillong was cleaner on 109 of them; the average daily gap was 39 AQI points.
Seasonality & days
Shillong peaks in February, while Sirohi peaks in December. Shillong logged 0% Severe days and 92% Good-or-Satisfactory days; Sirohi was 0% Severe and 69.2% Good-or-Satisfactory. Longest clean-air streaks: Shillong 113 days, Sirohi 41 days.
Year-over-year progress
Shillong has worsened by 41 AQI points (120.6%) from 2019 to 2024; Sirohi has improved by 4 AQI points (4.3%) over the same window. The worst recorded day for Shillong reached AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19; Sirohi hit AQI 335 at Vedhaynath Colony (RSPCB) on 2024-12-26.
Station-level disparity
Shillong spans 2 CPCB stations with a 2-point spread (min 42, max 44); Sirohi spans 1 stations with a 0-point spread (min 90, max 90).
Verdict
🏆 Shillong has better air quality with an AQI of 42 compared to Sirohi's 46.