Kalyān vs Samastipur
Side-by-side air quality comparison between Kalyān 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 | Kalyān | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 23.70 | 118.70 |
| PM10(µg/m³) | 40.90 | 131.30 |
| NO₂(µg/m³) | 20.60 | 48.30 |
| SO₂(µg/m³) | 23.00 | 20.10 |
| O₃(µg/m³) | 23.00 | 57.00 |
| CO(µg/m³) | 186.00 | 732.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kalyān averaged an AQI of 95 while Samastipur averaged 134 — a 39-point (41%) gap, with Samastipur the more polluted and Kalyān the cleaner of the two. On 450 days when both cities reported, Kalyān was cleaner on 338 of them; the average daily gap was 73 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kalyān logged 0.1% Severe days and 46.4% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Kalyān 78 days, Samastipur 9 days.
Year-over-year progress
Kalyān has improved by 4 AQI points (4%) from 2019 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Kalyān reached AQI 414 at Khadakpada (MPCB) on 2022-01-24; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Kalyān spans 2 CPCB stations with a 18-point spread (min 98, max 116); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Kalyān has better air quality with an AQI of 41 compared to Samastipur's 296. That's a significant difference of 255 points.