Chandigarh vs Hosur
Side-by-side air quality comparison between Chandigarh 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 | Chandigarh | Hosur |
|---|---|---|
| PM2.5(µg/m³) | 50.90 | 5.00 |
| PM10(µg/m³) | 66.80 | 6.00 |
| NO₂(µg/m³) | 44.60 | 9.20 |
| SO₂(µg/m³) | 8.10 | 4.50 |
| O₃(µg/m³) | 11.00 | 37.00 |
| CO(µg/m³) | 714.00 | 147.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chandigarh averaged an AQI of 153 while Hosur averaged 90 — a 63-point (70%) gap, with Chandigarh the more polluted and Hosur the cleaner of the two. On 96 days when both cities reported, Hosur was cleaner on 76 of them; the average daily gap was 99 AQI points.
Seasonality & days
Chandigarh peaks in January, while Hosur peaks in December. Chandigarh logged 0.3% Severe days and 39.9% Good-or-Satisfactory days; Hosur was 0% Severe and 73.89999999999999% Good-or-Satisfactory. Longest clean-air streaks: Chandigarh 92 days, Hosur 10 days.
Year-over-year progress
The worst recorded day for Chandigarh reached AQI 452 at Sector-53 (CPCC) on 2022-11-09; Hosur hit AQI 232 at SIPCOT Phase-1 (TNPCB) on 2022-10-25.
Station-level disparity
Chandigarh spans 3 CPCB stations with a 43-point spread (min 107, max 150); 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 Chandigarh's 85. That's a significant difference of 77 points.