Ratlam vs Siwan
Side-by-side air quality comparison between Ratlam and Siwan.
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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ratlam averaged an AQI of 113 while Siwan averaged 148 — a 35-point (31%) gap, with Siwan the more polluted and Ratlam the cleaner of the two. On 750 days when both cities reported, Ratlam was cleaner on 604 of them; the average daily gap was 105 AQI points.
Seasonality & days
Ratlam peaks in November, while Siwan peaks in January. Ratlam logged 0% Severe days and 46.4% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Ratlam 59 days, Siwan 13 days.
Year-over-year progress
Ratlam has improved by 19 AQI points (14.4%) from 2018 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Ratlam reached AQI 302 at Shasthri Nagar Ratlam (Lab) on 2020-11-11; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Ratlam spans 1 CPCB stations with a 0-point spread (min 103, max 103); Siwan spans 1 stations with a 0-point spread (min 197, max 197).