Ariyalur vs Prayagraj
Side-by-side air quality comparison between Ariyalur and Prayagraj.
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 | Prayagraj |
|---|---|---|
| PM2.5(µg/m³) | 6.80 | 49.50 |
| PM10(µg/m³) | 8.30 | 64.70 |
| NO₂(µg/m³) | 7.50 | 28.30 |
| SO₂(µg/m³) | 6.50 | 15.00 |
| O₃(µg/m³) | 43.00 | 77.00 |
| CO(µg/m³) | 133.00 | 233.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Prayagraj averaged 80 — a 34-point (74%) gap, with Prayagraj the more polluted and Ariyalur the cleaner of the two. On 313 days when both cities reported, Ariyalur was cleaner on 288 of them; the average daily gap was 52 AQI points.
Seasonality & days
Ariyalur peaks in March, while Prayagraj peaks in November. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Prayagraj was 0.2% Severe and 48% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Prayagraj 69 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Prayagraj has improved by 42 AQI points (34.4%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Prayagraj hit AQI 416 at Nagar Nigam (UPPCB) on 2021-11-08.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Prayagraj spans 3 stations with a 9-point spread (min 96, max 105).
Verdict
🏆 Ariyalur has better air quality with an AQI of 11 compared to Prayagraj's 83. That's a significant difference of 72 points.