Chapra vs Saharsa
Side-by-side air quality comparison between Chapra and Saharsa.
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 | Saharsa |
|---|---|---|
| PM2.5(µg/m³) | 102.90 | 99.90 |
| PM10(µg/m³) | 117.10 | 105.70 |
| NO₂(µg/m³) | 42.70 | 26.10 |
| SO₂(µg/m³) | 15.30 | 13.00 |
| O₃(µg/m³) | 46.00 | 62.00 |
| CO(µg/m³) | 805.00 | 670.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chapra averaged an AQI of 149 while Saharsa averaged 139 — a 10-point (7%) gap, with Chapra the more polluted and Saharsa the cleaner of the two. On 787 days when both cities reported, Saharsa was cleaner on 412 of them; the average daily gap was 48 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; Saharsa was 1.4% Severe and 28.4% Good-or-Satisfactory. Longest clean-air streaks: Chapra 14 days, Saharsa 20 days.
Year-over-year progress
Chapra has improved by 181 AQI points (54.8%) from 2021 to 2024; Saharsa has improved by 139 AQI points (50%) over the same window. The worst recorded day for Chapra reached AQI 452 at Darshan Nagar (BSPCB) on 2022-12-20; Saharsa hit AQI 454 at Police Line (BSPCB) on 2022-12-13.
Station-level disparity
Chapra spans 1 CPCB stations with a 0-point spread (min 195, max 195); Saharsa spans 1 stations with a 0-point spread (min 188, max 188).
Verdict
🏆 Saharsa has better air quality with an AQI of 234 compared to Chapra's 244.