Alwar vs Hosur
Side-by-side air quality comparison between Alwar 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 | Alwar | Hosur |
|---|---|---|
| PM2.5(µg/m³) | 58.40 | 5.00 |
| PM10(µg/m³) | 169.00 | 6.00 |
| NO₂(µg/m³) | 17.10 | 9.20 |
| SO₂(µg/m³) | 7.70 | 4.50 |
| O₃(µg/m³) | 58.00 | 37.00 |
| CO(µg/m³) | 391.00 | 147.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Alwar averaged an AQI of 88 while Hosur averaged 90 — a 2-point (2%) gap, with Hosur the more polluted and Alwar the cleaner of the two. On 94 days when both cities reported, Alwar was cleaner on 47 of them; the average daily gap was 25 AQI points.
Seasonality & days
Alwar peaks in November, while Hosur peaks in December. Alwar logged 0% Severe days and 70.2% Good-or-Satisfactory days; Hosur was 0% Severe and 73.89999999999999% Good-or-Satisfactory. Longest clean-air streaks: Alwar 97 days, Hosur 10 days.
Year-over-year progress
The worst recorded day for Alwar reached AQI 356 at Moti Doongri (RSPCB) on 2017-11-11; Hosur hit AQI 232 at SIPCOT Phase-1 (TNPCB) on 2022-10-25.
Station-level disparity
Alwar spans 1 CPCB stations with a 0-point spread (min 95, max 95); 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 Alwar's 147. That's a significant difference of 139 points.