Bihar Sharif vs Kalyān
Side-by-side air quality comparison between Bihar Sharif 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 | Bihar Sharif | Kalyān |
|---|---|---|
| PM2.5(µg/m³) | 71.90 | 23.70 |
| PM10(µg/m³) | 79.40 | 40.90 |
| NO₂(µg/m³) | 27.20 | 20.60 |
| SO₂(µg/m³) | 14.60 | 23.00 |
| O₃(µg/m³) | 64.00 | 23.00 |
| CO(µg/m³) | 543.00 | 186.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bihar Sharif averaged an AQI of 115 while Kalyān averaged 95 — a 20-point (21%) gap, with Bihar Sharif the more polluted and Kalyān the cleaner of the two. On 535 days when both cities reported, Kalyān was cleaner on 336 of them; the average daily gap was 68 AQI points.
Seasonality & days
Bihar Sharif peaks in December, while Kalyān peaks in January. Bihar Sharif logged 1% Severe days and 39.1% Good-or-Satisfactory days; Kalyān was 0.1% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Bihar Sharif 32 days, Kalyān 78 days.
Year-over-year progress
Bihar Sharif has improved by 138 AQI points (54.5%) from 2021 to 2024; Kalyān has improved by 4 AQI points (4%) over the same window. The worst recorded day for Bihar Sharif reached AQI 433 at D M Colony Bihar (BSPCB) on 2021-12-24; Kalyān hit AQI 414 at Khadakpada (MPCB) on 2022-01-24.
Station-level disparity
Bihar Sharif spans 1 CPCB stations with a 0-point spread (min 146, max 146); Kalyān spans 2 stations with a 18-point spread (min 98, max 116).
Verdict
🏆 Kalyān has better air quality with an AQI of 41 compared to Bihar Sharif's 140. That's a significant difference of 99 points.