Lucknow vs Siwan
Side-by-side air quality comparison between Lucknow 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 | Lucknow | Siwan |
|---|---|---|
| PM2.5(µg/m³) | 105.20 | 114.60 |
| PM10(µg/m³) | 155.50 | 125.70 |
| NO₂(µg/m³) | 59.70 | 44.50 |
| SO₂(µg/m³) | 25.50 | 15.40 |
| O₃(µg/m³) | 41.00 | 54.00 |
| CO(µg/m³) | 416.00 | 761.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Lucknow averaged an AQI of 127 while Siwan averaged 148 — a 21-point (17%) gap, with Siwan the more polluted and Lucknow the cleaner of the two. On 491 days when both cities reported, Siwan was cleaner on 272 of them; the average daily gap was 76 AQI points.
Seasonality & days
Lucknow peaks in November, while Siwan peaks in January. Lucknow logged 6.6% Severe days and 19.4% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Lucknow 45 days, Siwan 13 days.
Year-over-year progress
Lucknow has improved by 89 AQI points (41.2%) from 2016 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Lucknow reached AQI 500 at Lalbagh (CPCB) on 2017-11-09; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Lucknow spans 7 CPCB stations with a 119-point spread (min 97, max 216); Siwan spans 1 stations with a 0-point spread (min 197, max 197).
Verdict
🏆 Lucknow has better air quality with an AQI of 251 compared to Siwan's 282.