Ambala vs Chapra
Side-by-side air quality comparison between Ambala and Chapra.
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 | Ambala | Chapra |
|---|---|---|
| PM2.5(µg/m³) | 44.90 | 102.90 |
| PM10(µg/m³) | 117.80 | 117.10 |
| NO₂(µg/m³) | 13.20 | 42.70 |
| SO₂(µg/m³) | 11.50 | 15.30 |
| O₃(µg/m³) | 100.00 | 46.00 |
| CO(µg/m³) | 547.00 | 805.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ambala averaged an AQI of 94 while Chapra averaged 149 — a 55-point (59%) gap, with Chapra the more polluted and Ambala the cleaner of the two. On 875 days when both cities reported, Ambala was cleaner on 622 of them; the average daily gap was 99 AQI points.
Seasonality & days
Ambala peaks in November, while Chapra peaks in January. Ambala logged 0.2% Severe days and 46.5% Good-or-Satisfactory days; Chapra was 2.4% Severe and 26.8% Good-or-Satisfactory. Longest clean-air streaks: Ambala 44 days, Chapra 14 days.
Year-over-year progress
Ambala has improved by 52 AQI points (35.6%) from 2019 to 2024; Chapra has improved by 181 AQI points (54.8%) over the same window. The worst recorded day for Ambala reached AQI 452 at Patti Mehar (HSPCB) on 2020-11-04; Chapra hit AQI 452 at Darshan Nagar (BSPCB) on 2022-12-20.
Station-level disparity
Ambala spans 1 CPCB stations with a 0-point spread (min 126, max 126); Chapra spans 1 stations with a 0-point spread (min 195, max 195).
Verdict
🏆 Ambala has better air quality with an AQI of 113 compared to Chapra's 244. That's a significant difference of 131 points.