Nārnaul vs Samastipur
Side-by-side air quality comparison between Nārnaul 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 | Nārnaul | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 45.80 | 118.00 |
| PM10(µg/m³) | 120.10 | 134.60 |
| NO₂(µg/m³) | 21.00 | 61.60 |
| SO₂(µg/m³) | 7.10 | 18.30 |
| O₃(µg/m³) | 63.00 | 5.00 |
| CO(µg/m³) | 386.00 | 837.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Nārnaul averaged an AQI of 94 while Samastipur averaged 134 — a 40-point (43%) gap, with Samastipur the more polluted and Nārnaul the cleaner of the two. On 688 days when both cities reported, Nārnaul was cleaner on 532 of them; the average daily gap was 83 AQI points.
Seasonality & days
Nārnaul peaks in November, while Samastipur peaks in January. Nārnaul logged 0.1% Severe days and 40.8% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Nārnaul 63 days, Samastipur 9 days.
Year-over-year progress
Nārnaul has improved by 37 AQI points (28.2%) from 2019 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Nārnaul reached AQI 435 at Shastri Nagar (HSPCB) on 2023-11-16; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Nārnaul spans 1 CPCB stations with a 0-point spread (min 130, max 130); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Nārnaul has better air quality with an AQI of 114 compared to Samastipur's 293. That's a significant difference of 179 points.