Patna vs Samastipur
Side-by-side air quality comparison between Patna 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 | Patna | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 99.00 | 118.00 |
| PM10(µg/m³) | 111.80 | 134.60 |
| NO₂(µg/m³) | 49.30 | 61.60 |
| SO₂(µg/m³) | 18.10 | 18.30 |
| O₃(µg/m³) | 19.00 | 5.00 |
| CO(µg/m³) | 704.00 | 837.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Patna averaged an AQI of 172 while Samastipur averaged 134 — a 38-point (28%) gap, with Patna the more polluted and Samastipur the cleaner of the two. On 792 days when both cities reported, Samastipur was cleaner on 653 of them; the average daily gap was 85 AQI points.
Seasonality & days
Patna peaks in December, while Samastipur peaks in January. Patna logged 7.5% Severe days and 19.400000000000002% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Patna 30 days, Samastipur 9 days.
Year-over-year progress
Patna has improved by 40 AQI points (18.9%) from 2016 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Patna reached AQI 491 at IGSC Planetarium Complex (BSPCB) on 2016-01-01; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Patna spans 6 CPCB stations with a 39-point spread (min 154, max 193); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Patna has better air quality with an AQI of 231 compared to Samastipur's 293. That's a significant difference of 62 points.