Hassan vs Shillong
Side-by-side air quality comparison between Hassan 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 | Hassan | Shillong |
|---|---|---|
| PM2.5(µg/m³) | 2.80 | 17.90 |
| PM10(µg/m³) | 4.30 | 21.40 |
| NO₂(µg/m³) | 3.60 | 3.10 |
| SO₂(µg/m³) | 0.70 | 6.20 |
| O₃(µg/m³) | 40.00 | 118.00 |
| CO(µg/m³) | 121.00 | 304.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hassan averaged an AQI of 60 while Shillong averaged 75 — a 15-point (25%) gap, with Shillong the more polluted and Hassan the cleaner of the two. On 509 days when both cities reported, Shillong was cleaner on 373 of them; the average daily gap was 30 AQI points.
Seasonality & days
Hassan peaks in March, while Shillong peaks in February. Hassan logged 0% Severe days and 92.5% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Hassan 51 days, Shillong 113 days.
Year-over-year progress
Hassan has improved by 4 AQI points (6.2%) from 2021 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Hassan reached AQI 212 at BKatihalli (KSPCB) on 2024-05-11; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Hassan spans 1 CPCB stations with a 0-point spread (min 63, max 63); Shillong spans 2 stations with a 2-point spread (min 42, max 44).
Verdict
🏆 Hassan has better air quality with an AQI of 5 compared to Shillong's 30.