Bidar vs Shillong
Side-by-side air quality comparison between Bidar 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 | Bidar | Shillong |
|---|---|---|
| PM2.5(µg/m³) | 16.50 | 17.90 |
| PM10(µg/m³) | 22.50 | 21.40 |
| NO₂(µg/m³) | 7.30 | 3.10 |
| SO₂(µg/m³) | 2.40 | 6.20 |
| O₃(µg/m³) | 64.00 | 118.00 |
| CO(µg/m³) | 204.00 | 304.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bidar averaged an AQI of 85 while Shillong averaged 75 — a 10-point (13%) gap, with Bidar the more polluted and Shillong the cleaner of the two. On 332 days when both cities reported, Shillong was cleaner on 268 of them; the average daily gap was 44 AQI points.
Seasonality & days
Bidar peaks in January, while Shillong peaks in February. Bidar logged 0.1% Severe days and 72.5% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Bidar 24 days, Shillong 113 days.
Year-over-year progress
Bidar has worsened by 1 AQI points (1.2%) from 2021 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Bidar reached AQI 437 at Naubad (KSPCB) on 2022-01-25; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Bidar spans 1 CPCB stations with a 0-point spread (min 84, max 84); Shillong spans 2 stations with a 2-point spread (min 42, max 44).
Verdict
🏆 Bidar has better air quality with an AQI of 28 compared to Shillong's 30.