Ratlam vs Samastipur
Side-by-side air quality comparison between Ratlam 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 | Ratlam | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 31.00 | 118.00 |
| PM10(µg/m³) | 47.60 | 134.60 |
| NO₂(µg/m³) | 8.60 | 61.60 |
| SO₂(µg/m³) | 15.80 | 18.30 |
| O₃(µg/m³) | 55.00 | 5.00 |
| CO(µg/m³) | 205.00 | 837.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ratlam averaged an AQI of 113 while Samastipur averaged 134 — a 21-point (19%) gap, with Samastipur the more polluted and Ratlam the cleaner of the two. On 745 days when both cities reported, Ratlam was cleaner on 577 of them; the average daily gap was 89 AQI points.
Seasonality & days
Ratlam peaks in November, while Samastipur peaks in January. Ratlam logged 0% Severe days and 46.4% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Ratlam 59 days, Samastipur 9 days.
Year-over-year progress
Ratlam has improved by 19 AQI points (14.4%) from 2018 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Ratlam reached AQI 302 at Shasthri Nagar Ratlam (Lab) on 2020-11-11; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Ratlam spans 1 CPCB stations with a 0-point spread (min 103, max 103); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Ratlam has better air quality with an AQI of 53 compared to Samastipur's 293. That's a significant difference of 240 points.