Chapra vs Sasaram
Side-by-side air quality comparison between Chapra and Sasaram.
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 | Chapra | Sasaram |
|---|---|---|
| PM2.5(µg/m³) | 102.90 | 69.80 |
| PM10(µg/m³) | 117.10 | 80.30 |
| NO₂(µg/m³) | 42.70 | 15.10 |
| SO₂(µg/m³) | 15.30 | 14.40 |
| O₃(µg/m³) | 46.00 | 101.00 |
| CO(µg/m³) | 805.00 | 627.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chapra averaged an AQI of 149 while Sasaram averaged 109 — a 40-point (37%) gap, with Chapra the more polluted and Sasaram the cleaner of the two. On 788 days when both cities reported, Sasaram was cleaner on 611 of them; the average daily gap was 73 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Chapra logged 2.4% Severe days and 26.8% Good-or-Satisfactory days; Sasaram was 0.1% Severe and 37% Good-or-Satisfactory. Longest clean-air streaks: Chapra 14 days, Sasaram 27 days.
Year-over-year progress
Chapra has improved by 181 AQI points (54.8%) from 2021 to 2024; Sasaram has improved by 166 AQI points (60.4%) over the same window. The worst recorded day for Chapra reached AQI 452 at Darshan Nagar (BSPCB) on 2022-12-20; Sasaram hit AQI 401 at Dada Peer (BSPCB) on 2021-11-28.
Station-level disparity
Chapra spans 1 CPCB stations with a 0-point spread (min 195, max 195); Sasaram spans 1 stations with a 0-point spread (min 148, max 148).
Verdict
🏆 Sasaram has better air quality with an AQI of 133 compared to Chapra's 244. That's a significant difference of 111 points.