Begusarai vs Kalyān
Side-by-side air quality comparison between Begusarai 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 | Begusarai | Kalyān |
|---|---|---|
| PM2.5(µg/m³) | 88.90 | 22.10 |
| PM10(µg/m³) | 101.70 | 40.40 |
| NO₂(µg/m³) | 52.20 | 23.10 |
| SO₂(µg/m³) | 16.70 | 21.70 |
| O₃(µg/m³) | 23.00 | 19.00 |
| CO(µg/m³) | 695.00 | 174.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Begusarai averaged an AQI of 128 while Kalyān averaged 95 — a 33-point (35%) gap, with Begusarai the more polluted and Kalyān the cleaner of the two. On 130 days when both cities reported, Kalyān was cleaner on 82 of them; the average daily gap was 49 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Begusarai logged 8.7% Severe days and 20.8% Good-or-Satisfactory days; Kalyān was 0.1% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Begusarai 14 days, Kalyān 78 days.
Year-over-year progress
Begusarai has improved by 137 AQI points (51.7%) from 2023 to 2024; Kalyān has improved by 4 AQI points (4%) over the same window. The worst recorded day for Begusarai reached AQI 469 at Lohiyanagar (BSPCB) on 2023-01-14; Kalyān hit AQI 414 at Khadakpada (MPCB) on 2022-01-24.
Station-level disparity
Begusarai spans 1 CPCB stations with a 0-point spread (min 213, max 213); 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 Begusarai's 196. That's a significant difference of 156 points.