Bikaner vs Siwan
Side-by-side air quality comparison between Bikaner and Siwan.
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 | Bikaner | Siwan |
|---|---|---|
| PM2.5(µg/m³) | 97.80 | 97.60 |
| PM10(µg/m³) | 342.70 | 111.10 |
| NO₂(µg/m³) | 1.50 | 29.20 |
| SO₂(µg/m³) | 2.10 | 15.80 |
| O₃(µg/m³) | 69.00 | 108.00 |
| CO(µg/m³) | 164.00 | 601.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bikaner averaged an AQI of 154 while Siwan averaged 148 — a 6-point (4%) gap, with Bikaner the more polluted and Siwan the cleaner of the two. On 496 days when both cities reported, Siwan was cleaner on 276 of them; the average daily gap was 63 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Bikaner logged 0.1% Severe days and 21.6% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Bikaner 15 days, Siwan 13 days.
Year-over-year progress
Bikaner has improved by 16 AQI points (9.4%) from 2023 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Bikaner reached AQI 403 at MM Ground (RSPCB) on 2024-11-17; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Bikaner spans 1 CPCB stations with a 0-point spread (min 162, max 162); Siwan spans 1 stations with a 0-point spread (min 197, max 197).
Verdict
🏆 Siwan has better air quality with an AQI of 226 compared to Bikaner's 293. That's a significant difference of 67 points.