Shillong vs Sikar
Side-by-side air quality comparison between Shillong and Sikar.
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 | Sikar |
|---|---|---|
| PM2.5(µg/m³) | 17.90 | 33.60 |
| PM10(µg/m³) | 21.40 | 88.20 |
| NO₂(µg/m³) | 3.10 | 9.00 |
| SO₂(µg/m³) | 6.20 | 5.70 |
| O₃(µg/m³) | 118.00 | 76.00 |
| CO(µg/m³) | 304.00 | 146.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Shillong averaged an AQI of 75 while Sikar averaged 139 — a 64-point (85%) gap, with Sikar the more polluted and Shillong the cleaner of the two. On 187 days when both cities reported, Shillong was cleaner on 156 of them; the average daily gap was 72 AQI points.
Seasonality & days
Shillong peaks in February, while Sikar peaks in January. Shillong logged 0% Severe days and 92% Good-or-Satisfactory days; Sikar was 0.2% Severe and 34% Good-or-Satisfactory. Longest clean-air streaks: Shillong 113 days, Sikar 32 days.
Year-over-year progress
Shillong has worsened by 41 AQI points (120.6%) from 2019 to 2024; Sikar has worsened by 4 AQI points (3%) over the same window. The worst recorded day for Shillong reached AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19; Sikar hit AQI 452 at Radhakishan Pura (RSPCB) on 2023-11-16.
Station-level disparity
Shillong spans 2 CPCB stations with a 2-point spread (min 42, max 44); Sikar spans 1 stations with a 0-point spread (min 137, max 137).
Verdict
🏆 Shillong has better air quality with an AQI of 30 compared to Sikar's 88. That's a significant difference of 58 points.