Hisar vs Vellore
Side-by-side air quality comparison between Hisar and Vellore.
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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hisar averaged an AQI of 136 while Vellore averaged 61 — a 75-point (123%) gap, with Hisar the more polluted and Vellore the cleaner of the two. On 206 days when both cities reported, Vellore was cleaner on 189 of them; the average daily gap was 85 AQI points.
Seasonality & days
Hisar peaks in November, while Vellore peaks in December. Hisar logged 1.6% Severe days and 29.700000000000003% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Hisar 34 days, Vellore 23 days.
Year-over-year progress
Hisar has improved by 39 AQI points (22.3%) from 2019 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Hisar reached AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Hisar spans 1 CPCB stations with a 0-point spread (min 168, max 168); Vellore spans 1 stations with a 0-point spread (min 70, max 70).