Darbhanga vs Kalyān
Side-by-side air quality comparison between Darbhanga and Kalyān.
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 | Darbhanga | Kalyān |
|---|---|---|
| PM2.5(µg/m³) | 114.10 | 22.10 |
| PM10(µg/m³) | 129.90 | 40.40 |
| NO₂(µg/m³) | 56.30 | 23.10 |
| SO₂(µg/m³) | 18.30 | 21.70 |
| O₃(µg/m³) | 16.00 | 19.00 |
| CO(µg/m³) | 816.00 | 174.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2023, Darbhanga averaged an AQI of 365 while Kalyān averaged 95 — a 270-point (284%) gap, with Darbhanga the more polluted and Kalyān the cleaner of the two. On 333 days when both cities reported, Kalyān was cleaner on 242 of them; the average daily gap was 87 AQI points.
Seasonality & days
Darbhanga peaks in December, while Kalyān peaks in January. Darbhanga logged 7.1% Severe days and 26.9% Good-or-Satisfactory days; Kalyān was 0.1% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Darbhanga 20 days, Kalyān 78 days.
Year-over-year progress
Darbhanga has worsened by 116 AQI points (46.6%) from 2021 to 2023; Kalyān has improved by 4 AQI points (4%) over the same window. The worst recorded day for Darbhanga reached AQI 473 at Town Hall Lal Bagh (BSPCB) on 2023-01-01; Kalyān hit AQI 414 at Khadakpada (MPCB) on 2022-01-24.
Station-level disparity
Darbhanga spans 1 CPCB stations with a 0-point spread (min 208, max 208); Kalyān spans 2 stations with a 18-point spread (min 98, max 116).
Verdict
🏆 Kalyān has better air quality with an AQI of 40 compared to Darbhanga's 281. That's a significant difference of 241 points.