Ariyalur vs Ujjain
Side-by-side air quality comparison between Ariyalur 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 | Ariyalur | Ujjain |
|---|---|---|
| PM2.5(µg/m³) | 6.90 | 31.20 |
| PM10(µg/m³) | 8.80 | 47.50 |
| NO₂(µg/m³) | 8.10 | 7.70 |
| SO₂(µg/m³) | 5.20 | 15.70 |
| O₃(µg/m³) | 41.00 | 57.00 |
| CO(µg/m³) | 133.00 | 219.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Ujjain averaged 116 — a 70-point (152%) gap, with Ujjain the more polluted and Ariyalur the cleaner of the two. On 528 days when both cities reported, Ariyalur was cleaner on 512 of them; the average daily gap was 76 AQI points.
Seasonality & days
Ariyalur peaks in March, while Ujjain peaks in November. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Ujjain was 0.1% Severe and 33.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Ujjain 67 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Ujjain has improved by 71 AQI points (38%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Ujjain hit AQI 500 at Mahakaleshwar Temple (MPPCB) on 2023-03-10.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Ujjain spans 1 stations with a 0-point spread (min 131, max 131).
Verdict
🏆 Ariyalur has better air quality with an AQI of 12 compared to Ujjain's 53.