Arrah vs Nalbāri
Side-by-side air quality comparison between Arrah and Nalbāri.
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 | Arrah | Nalbāri |
|---|---|---|
| PM2.5(µg/m³) | 102.90 | 54.50 |
| PM10(µg/m³) | 117.10 | 61.20 |
| NO₂(µg/m³) | 42.70 | 6.50 |
| SO₂(µg/m³) | 15.30 | 5.80 |
| O₃(µg/m³) | 46.00 | 123.00 |
| CO(µg/m³) | 841.00 | 407.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Arrah averaged an AQI of 123 while Nalbāri averaged 129 — a 6-point (5%) gap, with Nalbāri the more polluted and Arrah the cleaner of the two. On 507 days when both cities reported, Nalbāri was cleaner on 320 of them; the average daily gap was 70 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Arrah logged 0.2% Severe days and 32.3% Good-or-Satisfactory days; Nalbāri was 0% Severe and 41% Good-or-Satisfactory. Longest clean-air streaks: Arrah 11 days, Nalbāri 18 days.
Year-over-year progress
Arrah has improved by 175 AQI points (58.7%) from 2021 to 2024; Nalbāri has improved by 72 AQI points (35.8%) over the same window. The worst recorded day for Arrah reached AQI 420 at New DM Office (BSPCB) on 2021-12-21; Nalbāri hit AQI 384 at Bata Chowk (PCBA) on 2024-01-08.
Station-level disparity
Arrah spans 1 CPCB stations with a 0-point spread (min 162, max 162); Nalbāri spans 1 stations with a 0-point spread (min 141, max 141).
Verdict
🏆 Nalbāri has better air quality with an AQI of 91 compared to Arrah's 244. That's a significant difference of 153 points.