Hisar vs Samastipur
Side-by-side air quality comparison between Hisar 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 | Hisar | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 75.70 | 118.70 |
| PM10(µg/m³) | 224.40 | 131.30 |
| NO₂(µg/m³) | 34.70 | 48.30 |
| SO₂(µg/m³) | 8.30 | 20.10 |
| O₃(µg/m³) | 43.00 | 57.00 |
| CO(µg/m³) | 508.00 | 732.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hisar averaged an AQI of 136 while Samastipur averaged 134 — a 2-point (1%) gap, with Hisar the more polluted and Samastipur the cleaner of the two. On 412 days when both cities reported, Hisar was cleaner on 241 of them; the average daily gap was 68 AQI points.
Seasonality & days
Hisar peaks in November, while Samastipur peaks in January. Hisar logged 1.6% Severe days and 29.700000000000003% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Hisar 34 days, Samastipur 9 days.
Year-over-year progress
Hisar has improved by 39 AQI points (22.3%) from 2019 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Hisar reached AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Hisar spans 1 CPCB stations with a 0-point spread (min 168, max 168); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Hisar has better air quality with an AQI of 183 compared to Samastipur's 296. That's a significant difference of 113 points.