Arrah vs Tālcher
Side-by-side air quality comparison between Arrah and Tālcher.
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 | Tālcher |
|---|---|---|
| PM2.5(µg/m³) | 99.00 | 65.90 |
| PM10(µg/m³) | 115.50 | 72.20 |
| NO₂(µg/m³) | 53.70 | 25.60 |
| SO₂(µg/m³) | 13.70 | 5.80 |
| O₃(µg/m³) | 10.00 | 19.00 |
| CO(µg/m³) | 944.00 | 508.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Arrah averaged an AQI of 123 while Tālcher averaged 127 — a 4-point (3%) gap, with Tālcher the more polluted and Arrah the cleaner of the two. On 509 days when both cities reported, Tālcher was cleaner on 437 of them; the average daily gap was 75 AQI points.
Seasonality & days
Arrah peaks in January, while Tālcher peaks in December. Arrah logged 0.2% Severe days and 32.3% Good-or-Satisfactory days; Tālcher was 0.2% Severe and 43.1% Good-or-Satisfactory. Longest clean-air streaks: Arrah 11 days, Tālcher 44 days.
Year-over-year progress
Arrah has improved by 175 AQI points (58.7%) from 2021 to 2024; Tālcher has improved by 63 AQI points (33.2%) over the same window. The worst recorded day for Arrah reached AQI 420 at New DM Office (BSPCB) on 2021-12-21; Tālcher hit AQI 414 at Talcher (OSPCB) on 2018-11-27.
Station-level disparity
Arrah spans 1 CPCB stations with a 0-point spread (min 162, max 162); Tālcher spans 1 stations with a 0-point spread (min 132, max 132).
Verdict
🏆 Tālcher has better air quality with an AQI of 120 compared to Arrah's 231. That's a significant difference of 111 points.