Puducherry vs Samastipur
Side-by-side air quality comparison between Puducherry 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 | Puducherry | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 21.20 | 79.40 |
| PM10(µg/m³) | 27.00 | 101.50 |
| NO₂(µg/m³) | 3.80 | 4.30 |
| SO₂(µg/m³) | 12.20 | 22.90 |
| O₃(µg/m³) | 143.00 | 259.00 |
| CO(µg/m³) | 170.00 | 378.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Puducherry averaged an AQI of 55 while Samastipur averaged 134 — a 79-point (144%) gap, with Samastipur the more polluted and Puducherry the cleaner of the two. On 754 days when both cities reported, Puducherry was cleaner on 725 of them; the average daily gap was 123 AQI points.
Seasonality & days
Puducherry peaks in December, while Samastipur peaks in January. Puducherry logged 0% Severe days and 95.4% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Puducherry 117 days, Samastipur 9 days.
Year-over-year progress
Puducherry has worsened by 1 AQI points (1.9%) from 2021 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Puducherry reached AQI 274 at Jawahar Nagar (PPCC) on 2022-10-25; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Puducherry spans 1 CPCB stations with a 0-point spread (min 56, max 56); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Puducherry has better air quality with an AQI of 35 compared to Samastipur's 165. That's a significant difference of 130 points.