Arrah vs Tumkur
Side-by-side air quality comparison between Arrah and Tumkur.
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 | Tumkur |
|---|---|---|
| PM2.5(µg/m³) | 102.90 | 3.40 |
| PM10(µg/m³) | 117.10 | 4.50 |
| NO₂(µg/m³) | 42.70 | 6.40 |
| SO₂(µg/m³) | 15.30 | 1.30 |
| O₃(µg/m³) | 46.00 | 35.00 |
| CO(µg/m³) | 841.00 | 124.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Arrah averaged an AQI of 123 while Tumkur averaged 88 — a 35-point (40%) gap, with Arrah the more polluted and Tumkur the cleaner of the two. On 394 days when both cities reported, Tumkur was cleaner on 267 of them; the average daily gap was 74 AQI points.
Seasonality & days
Arrah peaks in January, while Tumkur peaks in December. Arrah logged 0.2% Severe days and 32.3% Good-or-Satisfactory days; Tumkur was 0% Severe and 54% Good-or-Satisfactory. Longest clean-air streaks: Arrah 11 days, Tumkur 20 days.
Year-over-year progress
Arrah has improved by 175 AQI points (58.7%) from 2021 to 2024; Tumkur has improved by 69 AQI points (43.9%) over the same window. The worst recorded day for Arrah reached AQI 420 at New DM Office (BSPCB) on 2021-12-21; Tumkur hit AQI 355 at Thimmalapura (KSPCB) on 2023-02-15.
Station-level disparity
Arrah spans 1 CPCB stations with a 0-point spread (min 162, max 162); Tumkur spans 1 stations with a 0-point spread (min 97, max 97).
Verdict
🏆 Tumkur has better air quality with an AQI of 6 compared to Arrah's 244. That's a significant difference of 238 points.