Chapra vs Sagar
Side-by-side air quality comparison between Chapra and Sagar.
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 | Sagar |
|---|---|---|
| PM2.5(µg/m³) | 99.00 | 25.90 |
| PM10(µg/m³) | 115.50 | 49.60 |
| NO₂(µg/m³) | 53.70 | 14.50 |
| SO₂(µg/m³) | 13.70 | 3.20 |
| O₃(µg/m³) | 10.00 | 48.00 |
| CO(µg/m³) | 858.00 | 223.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chapra averaged an AQI of 149 while Sagar averaged 96 — a 53-point (55%) gap, with Chapra the more polluted and Sagar the cleaner of the two. On 583 days when both cities reported, Sagar was cleaner on 453 of them; the average daily gap was 108 AQI points.
Seasonality & days
Chapra peaks in January, while Sagar peaks in November. Chapra logged 2.4% Severe days and 26.8% Good-or-Satisfactory days; Sagar was 0% Severe and 69.9% Good-or-Satisfactory. Longest clean-air streaks: Chapra 14 days, Sagar 57 days.
Year-over-year progress
Chapra has improved by 181 AQI points (54.8%) from 2021 to 2024; Sagar has worsened by 24 AQI points (33.3%) over the same window. The worst recorded day for Chapra reached AQI 452 at Darshan Nagar (BSPCB) on 2022-12-20; Sagar hit AQI 347 at Civil Lines (MPPCB) on 2024-12-25.
Station-level disparity
Chapra spans 1 CPCB stations with a 0-point spread (min 195, max 195); Sagar spans 2 stations with a 45-point spread (min 73, max 118).
Verdict
🏆 Sagar has better air quality with an AQI of 50 compared to Chapra's 231. That's a significant difference of 181 points.