Arrah vs Kanchipuram
Side-by-side air quality comparison between Arrah and Kanchipuram.
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 | Kanchipuram |
|---|---|---|
| PM2.5(µg/m³) | 102.90 | 9.40 |
| PM10(µg/m³) | 117.10 | 11.10 |
| NO₂(µg/m³) | 42.70 | 10.40 |
| SO₂(µg/m³) | 15.30 | 4.60 |
| O₃(µg/m³) | 46.00 | 44.00 |
| CO(µg/m³) | 841.00 | 243.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Arrah averaged an AQI of 123 while Kanchipuram averaged 51 — a 72-point (141%) gap, with Arrah the more polluted and Kanchipuram the cleaner of the two. On 272 days when both cities reported, Kanchipuram was cleaner on 260 of them; the average daily gap was 126 AQI points.
Seasonality & days
Arrah peaks in January, while Kanchipuram peaks in February. Arrah logged 0.2% Severe days and 32.3% Good-or-Satisfactory days; Kanchipuram was 0% Severe and 94% Good-or-Satisfactory. Longest clean-air streaks: Arrah 11 days, Kanchipuram 18 days.
Year-over-year progress
Arrah has improved by 175 AQI points (58.7%) from 2021 to 2024; Kanchipuram has improved by 18 AQI points (26.1%) over the same window. The worst recorded day for Arrah reached AQI 420 at New DM Office (BSPCB) on 2021-12-21; Kanchipuram hit AQI 320 at Kilambi (TNPCB) on 2023-05-22.
Station-level disparity
Arrah spans 1 CPCB stations with a 0-point spread (min 162, max 162); Kanchipuram spans 1 stations with a 0-point spread (min 57, max 57).
Verdict
🏆 Kanchipuram has better air quality with an AQI of 16 compared to Arrah's 244. That's a significant difference of 228 points.