Hisar vs Shillong
Side-by-side air quality comparison between Hisar 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 | Hisar | Shillong |
|---|---|---|
| PM2.5(µg/m³) | 76.60 | 18.30 |
| PM10(µg/m³) | 237.00 | 21.80 |
| NO₂(µg/m³) | 40.60 | 3.60 |
| SO₂(µg/m³) | 7.30 | 6.20 |
| O₃(µg/m³) | 27.00 | 109.00 |
| CO(µg/m³) | 573.00 | 309.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hisar averaged an AQI of 136 while Shillong averaged 75 — a 61-point (81%) gap, with Hisar the more polluted and Shillong the cleaner of the two. On 902 days when both cities reported, Shillong was cleaner on 862 of them; the average daily gap was 123 AQI points.
Seasonality & days
Hisar peaks in November, while Shillong peaks in February. Hisar logged 1.6% Severe days and 29.700000000000003% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Hisar 34 days, Shillong 113 days.
Year-over-year progress
Hisar has improved by 39 AQI points (22.3%) from 2019 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Hisar reached AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Hisar spans 1 CPCB stations with a 0-point spread (min 168, max 168); Shillong spans 2 stations with a 2-point spread (min 42, max 44).
Verdict
🏆 Shillong has better air quality with an AQI of 31 compared to Hisar's 191. That's a significant difference of 160 points.