Katni vs Samastipur
Side-by-side air quality comparison between Katni 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 | Katni | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 30.30 | 118.70 |
| PM10(µg/m³) | 46.10 | 131.30 |
| NO₂(µg/m³) | 9.10 | 48.30 |
| SO₂(µg/m³) | 5.30 | 20.10 |
| O₃(µg/m³) | 76.00 | 57.00 |
| CO(µg/m³) | 191.00 | 732.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Katni averaged an AQI of 105 while Samastipur averaged 134 — a 29-point (28%) gap, with Samastipur the more polluted and Katni the cleaner of the two. On 730 days when both cities reported, Katni was cleaner on 532 of them; the average daily gap was 63 AQI points.
Seasonality & days
Katni peaks in November, while Samastipur peaks in January. Katni logged 0% Severe days and 39.3% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Katni 62 days, Samastipur 9 days.
Year-over-year progress
Katni has improved by 93 AQI points (47%) from 2019 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Katni reached AQI 350 at Gole Bazar (MPPCB) on 2019-11-01; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Katni spans 1 CPCB stations with a 0-point spread (min 137, max 137); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Katni has better air quality with an AQI of 51 compared to Samastipur's 296. That's a significant difference of 245 points.