Ghaziabad vs Hosur
Side-by-side air quality comparison between Ghaziabad 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 | Ghaziabad | Hosur |
|---|---|---|
| PM2.5(µg/m³) | 69.60 | 4.50 |
| PM10(µg/m³) | 96.40 | 5.00 |
| NO₂(µg/m³) | 27.40 | 7.50 |
| SO₂(µg/m³) | 11.00 | 4.10 |
| O₃(µg/m³) | 65.00 | 38.00 |
| CO(µg/m³) | 542.00 | 140.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ghaziabad averaged an AQI of 177 while Hosur averaged 90 — a 87-point (97%) gap, with Ghaziabad the more polluted and Hosur the cleaner of the two. On 96 days when both cities reported, Hosur was cleaner on 89 of them; the average daily gap was 149 AQI points.
Seasonality & days
Ghaziabad peaks in November, while Hosur peaks in December. Ghaziabad logged 12.2% Severe days and 13.700000000000001% Good-or-Satisfactory days; Hosur was 0% Severe and 73.89999999999999% Good-or-Satisfactory. Longest clean-air streaks: Ghaziabad 19 days, Hosur 10 days.
Year-over-year progress
The worst recorded day for Ghaziabad reached AQI 500 at Vasundhara (UPPCB) on 2017-12-21; Hosur hit AQI 232 at SIPCOT Phase-1 (TNPCB) on 2022-10-25.
Station-level disparity
Ghaziabad spans 4 CPCB stations with a 30-point spread (min 198, max 228); 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 Ghaziabad's 133. That's a significant difference of 125 points.