Ghaziabad vs Samastipur
Side-by-side air quality comparison between Ghaziabad and Samastipur.
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 | Ghaziabad | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 69.60 | 118.70 |
| PM10(µg/m³) | 96.40 | 131.30 |
| NO₂(µg/m³) | 27.40 | 48.30 |
| SO₂(µg/m³) | 11.00 | 20.10 |
| O₃(µg/m³) | 65.00 | 57.00 |
| CO(µg/m³) | 542.00 | 732.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ghaziabad averaged an AQI of 177 while Samastipur averaged 134 — a 43-point (32%) gap, with Ghaziabad the more polluted and Samastipur the cleaner of the two. On 485 days when both cities reported, Samastipur was cleaner on 339 of them; the average daily gap was 89 AQI points.
Seasonality & days
Ghaziabad peaks in November, while Samastipur peaks in January. Ghaziabad logged 12.2% Severe days and 13.700000000000001% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Ghaziabad 19 days, Samastipur 9 days.
Year-over-year progress
Ghaziabad has improved by 115 AQI points (39.4%) from 2017 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Ghaziabad reached AQI 500 at Vasundhara (UPPCB) on 2017-12-21; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Ghaziabad spans 4 CPCB stations with a 30-point spread (min 198, max 228); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Ghaziabad has better air quality with an AQI of 133 compared to Samastipur's 296. That's a significant difference of 163 points.