Ariyalur vs Hosur
Side-by-side air quality comparison between Ariyalur and Hosur.
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 | Ariyalur | Hosur |
|---|---|---|
| PM2.5(µg/m³) | 6.80 | 4.50 |
| PM10(µg/m³) | 8.30 | 5.00 |
| NO₂(µg/m³) | 7.50 | 7.50 |
| SO₂(µg/m³) | 6.50 | 4.10 |
| O₃(µg/m³) | 43.00 | 38.00 |
| CO(µg/m³) | 133.00 | 140.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Hosur averaged 90 — a 44-point (96%) gap, with Hosur the more polluted and Ariyalur the cleaner of the two. On 8 days when both cities reported, Ariyalur was cleaner on 6 of them; the average daily gap was 64 AQI points.
Seasonality & days
Ariyalur peaks in March, while Hosur peaks in December. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Hosur was 0% Severe and 73.89999999999999% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Hosur 10 days.
Year-over-year progress
The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Hosur hit AQI 232 at SIPCOT Phase-1 (TNPCB) on 2022-10-25.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Hosur spans 1 stations with a 0-point spread (min 90, max 90).
Verdict
🏆 Hosur has better air quality with an AQI of 8 compared to Ariyalur's 11.