Perundurai vs Ulhasnagar
Side-by-side air quality comparison between Perundurai and Ulhasnagar.
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, Perundurai averaged an AQI of 75 while Ulhasnagar averaged 117 — a 42-point (56%) gap, with Ulhasnagar the more polluted and Perundurai the cleaner of the two. On 56 days when both cities reported, Perundurai was cleaner on 54 of them; the average daily gap was 87 AQI points.
Seasonality & days
Perundurai peaks in November, while Ulhasnagar peaks in January. Perundurai logged 0% Severe days and 80.7% Good-or-Satisfactory days; Ulhasnagar was 0% Severe and 46.9% Good-or-Satisfactory. Longest clean-air streaks: Perundurai 13 days, Ulhasnagar 74 days.
Year-over-year progress
The worst recorded day for Perundurai reached AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12; Ulhasnagar hit AQI 319 at Sidhi Vinayak Nagar (MPCB) on 2023-11-13.
Station-level disparity
Perundurai spans 1 CPCB stations with a 0-point spread (min 75, max 75); Ulhasnagar spans 1 stations with a 0-point spread (min 120, max 120).