Aizawl vs Shillong
Side-by-side air quality comparison between Aizawl 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 | Aizawl | Shillong |
|---|---|---|
| PM2.5(µg/m³) | 30.30 | 20.40 |
| PM10(µg/m³) | 39.70 | 23.70 |
| NO₂(µg/m³) | 8.00 | 4.20 |
| SO₂(µg/m³) | 3.30 | 5.70 |
| O₃(µg/m³) | 48.00 | 99.00 |
| CO(µg/m³) | 254.00 | 305.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Aizawl averaged an AQI of 46 while Shillong averaged 75 — a 29-point (63%) gap, with Shillong the more polluted and Aizawl the cleaner of the two. On 767 days when both cities reported, Aizawl was cleaner on 441 of them; the average daily gap was 20 AQI points.
Seasonality & days
Aizawl peaks in March, while Shillong peaks in February. Aizawl logged 0% Severe days and 94.2% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Aizawl 76 days, Shillong 113 days.
Year-over-year progress
Aizawl has worsened by 16 AQI points (53.3%) from 2020 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Aizawl reached AQI 208 at Sikulpuikawn Aizawl (PCB) on 2021-01-20; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Aizawl spans 1 CPCB stations with a 0-point spread (min 43, max 43); Shillong spans 2 stations with a 2-point spread (min 42, max 44).
Verdict
🏆 Shillong has better air quality with an AQI of 34 compared to Aizawl's 51.