Sasaram vs Shillong
Side-by-side air quality comparison between Sasaram 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 | Sasaram | Shillong |
|---|---|---|
| PM2.5(µg/m³) | 69.80 | 17.90 |
| PM10(µg/m³) | 80.30 | 21.40 |
| NO₂(µg/m³) | 15.10 | 3.10 |
| SO₂(µg/m³) | 14.40 | 6.20 |
| O₃(µg/m³) | 101.00 | 118.00 |
| CO(µg/m³) | 627.00 | 304.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Sasaram averaged an AQI of 109 while Shillong averaged 75 — a 34-point (45%) gap, with Sasaram the more polluted and Shillong the cleaner of the two. On 460 days when both cities reported, Shillong was cleaner on 395 of them; the average daily gap was 110 AQI points.
Seasonality & days
Sasaram peaks in January, while Shillong peaks in February. Sasaram logged 0.1% Severe days and 37% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Sasaram 27 days, Shillong 113 days.
Year-over-year progress
Sasaram has improved by 166 AQI points (60.4%) from 2021 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Sasaram reached AQI 401 at Dada Peer (BSPCB) on 2021-11-28; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Sasaram spans 1 CPCB stations with a 0-point spread (min 148, max 148); 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 Sasaram's 133. That's a significant difference of 103 points.