Hosur vs Ramanathapuram
Side-by-side air quality comparison between Hosur and Ramanathapuram.
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 | Hosur | Ramanathapuram |
|---|---|---|
| PM2.5(µg/m³) | 4.50 | 5.60 |
| PM10(µg/m³) | 5.00 | 8.30 |
| NO₂(µg/m³) | 7.50 | 4.20 |
| SO₂(µg/m³) | 4.10 | 4.00 |
| O₃(µg/m³) | 38.00 | 31.00 |
| CO(µg/m³) | 140.00 | 143.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2022, Hosur averaged an AQI of 90 while Ramanathapuram averaged 42 — a 48-point (114%) gap, with Hosur the more polluted and Ramanathapuram the cleaner of the two. On 92 days when both cities reported, Ramanathapuram was cleaner on 72 of them; the average daily gap was 48 AQI points.
Seasonality & days
Hosur peaks in December, while Ramanathapuram peaks in January. Hosur logged 0% Severe days and 73.89999999999999% Good-or-Satisfactory days; Ramanathapuram was 0% Severe and 94.4% Good-or-Satisfactory. Longest clean-air streaks: Hosur 10 days, Ramanathapuram 46 days.
Year-over-year progress
The worst recorded day for Hosur reached AQI 232 at SIPCOT Phase-1 (TNPCB) on 2022-10-25; Ramanathapuram hit AQI 246 at Chalai Bazaar (TNPCB) on 2022-12-07.
Station-level disparity
Hosur spans 1 CPCB stations with a 0-point spread (min 90, max 90); Ramanathapuram spans 1 stations with a 0-point spread (min 48, max 48).
Verdict
🏆 Hosur has better air quality with an AQI of 8 compared to Ramanathapuram's 9.