Perundurai vs Ujjain
Side-by-side air quality comparison between Perundurai and Ujjain.
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 | Perundurai | Ujjain |
|---|---|---|
| PM2.5(µg/m³) | 6.80 | 32.40 |
| PM10(µg/m³) | 8.00 | 47.70 |
| NO₂(µg/m³) | 11.30 | 6.80 |
| SO₂(µg/m³) | 3.20 | 13.70 |
| O₃(µg/m³) | 32.00 | 66.00 |
| CO(µg/m³) | 159.00 | 215.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Perundurai averaged an AQI of 75 while Ujjain averaged 116 — a 41-point (55%) gap, with Ujjain the more polluted and Perundurai the cleaner of the two. On 56 days when both cities reported, Perundurai was cleaner on 51 of them; the average daily gap was 69 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Perundurai logged 0% Severe days and 80.7% Good-or-Satisfactory days; Ujjain was 0.1% Severe and 33.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Perundurai 13 days, Ujjain 67 days.
Year-over-year progress
The worst recorded day for Perundurai reached AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12; Ujjain hit AQI 500 at Mahakaleshwar Temple (MPPCB) on 2023-03-10.
Station-level disparity
Perundurai spans 1 CPCB stations with a 0-point spread (min 75, max 75); Ujjain spans 1 stations with a 0-point spread (min 131, max 131).
Verdict
🏆 Perundurai has better air quality with an AQI of 11 compared to Ujjain's 55.