Begusarai vs Kolkata
Side-by-side air quality comparison between Begusarai and Kolkata.
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 | Kolkata |
|---|---|---|
| PM2.5(µg/m³) | 72.20 | 46.60 |
| PM10(µg/m³) | 89.40 | 54.40 |
| NO₂(µg/m³) | 9.40 | 4.10 |
| SO₂(µg/m³) | 21.00 | 14.60 |
| O₃(µg/m³) | 195.00 | 173.00 |
| CO(µg/m³) | 462.00 | 454.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Begusarai averaged an AQI of 128 while Kolkata averaged 101 — a 27-point (27%) gap, with Begusarai the more polluted and Kolkata the cleaner of the two. On 130 days when both cities reported, Begusarai was cleaner on 76 of them; the average daily gap was 53 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; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Begusarai 14 days, Kolkata 75 days.
Year-over-year progress
Begusarai has improved by 137 AQI points (51.7%) from 2023 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Begusarai reached AQI 469 at Lohiyanagar (BSPCB) on 2023-01-14; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Begusarai spans 1 CPCB stations with a 0-point spread (min 213, max 213); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).
Verdict
🏆 Kolkata has better air quality with an AQI of 78 compared to Begusarai's 141. That's a significant difference of 63 points.