Bangalore vs Karur
Side-by-side air quality comparison between Bangalore and Karur.
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 | Bangalore | Karur |
|---|---|---|
| PM2.5(µg/m³) | 3.20 | 2.30 |
| PM10(µg/m³) | 3.40 | 2.90 |
| NO₂(µg/m³) | 2.30 | 1.20 |
| SO₂(µg/m³) | 2.70 | 1.30 |
| O₃(µg/m³) | 88.00 | 81.00 |
| CO(µg/m³) | 222.00 | 120.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bangalore averaged an AQI of 74 while Karur averaged 71 — a 3-point (4%) gap, with Bangalore the more polluted and Karur the cleaner of the two. On 71 days when both cities reported, Karur was cleaner on 66 of them; the average daily gap was 58 AQI points.
Seasonality & days
Bangalore peaks in March, while Karur peaks in December. Bangalore logged 0.5% Severe days and 42.6% Good-or-Satisfactory days; Karur was 0% Severe and 80.3% Good-or-Satisfactory. Longest clean-air streaks: Bangalore 31 days, Karur 34 days.
Year-over-year progress
The worst recorded day for Bangalore reached AQI 500 at Silk Board (KSPCB) on 2024-01-10; Karur hit AQI 149 at Kamadenu Nagar (TNPCB) on 2024-11-26.
Station-level disparity
Bangalore spans 14 CPCB stations with a 50-point spread (min 49, max 99); Karur spans 1 stations with a 0-point spread (min 71, max 71).
Verdict
🏆 Karur has better air quality with an AQI of 4 compared to Bangalore's 5.