Guwahati vs Hosur
Side-by-side air quality comparison between Guwahati 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 | Guwahati | Hosur |
|---|---|---|
| PM2.5(µg/m³) | 31.90 | 4.50 |
| PM10(µg/m³) | 36.00 | 5.00 |
| NO₂(µg/m³) | 5.40 | 7.50 |
| SO₂(µg/m³) | 4.20 | 4.10 |
| O₃(µg/m³) | 97.00 | 38.00 |
| CO(µg/m³) | 393.00 | 140.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Guwahati averaged an AQI of 123 while Hosur averaged 90 — a 33-point (37%) gap, with Guwahati the more polluted and Hosur the cleaner of the two. On 96 days when both cities reported, Hosur was cleaner on 60 of them; the average daily gap was 56 AQI points.
Seasonality & days
Guwahati peaks in January, while Hosur peaks in December. Guwahati logged 0.1% Severe days and 44.9% Good-or-Satisfactory days; Hosur was 0% Severe and 73.89999999999999% Good-or-Satisfactory. Longest clean-air streaks: Guwahati 105 days, Hosur 10 days.
Year-over-year progress
The worst recorded day for Guwahati reached AQI 420 at Railway Colony (PCBA) on 2023-01-15; Hosur hit AQI 232 at SIPCOT Phase-1 (TNPCB) on 2022-10-25.
Station-level disparity
Guwahati spans 4 CPCB stations with a 26-point spread (min 118, max 144); 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 Guwahati's 54.