Ariyalur vs Patna
Side-by-side air quality comparison between Ariyalur and Patna.
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 | Patna |
|---|---|---|
| PM2.5(µg/m³) | 6.80 | 97.80 |
| PM10(µg/m³) | 8.30 | 109.40 |
| NO₂(µg/m³) | 7.50 | 40.50 |
| SO₂(µg/m³) | 6.50 | 18.90 |
| O₃(µg/m³) | 43.00 | 52.00 |
| CO(µg/m³) | 133.00 | 667.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Patna averaged 172 — a 126-point (274%) gap, with Patna the more polluted and Ariyalur the cleaner of the two. On 610 days when both cities reported, Ariyalur was cleaner on 608 of them; the average daily gap was 204 AQI points.
Seasonality & days
Ariyalur peaks in March, while Patna peaks in December. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Patna was 7.5% Severe and 19.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Patna 30 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Patna has improved by 40 AQI points (18.9%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Patna hit AQI 491 at IGSC Planetarium Complex (BSPCB) on 2016-01-01.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Patna spans 6 stations with a 39-point spread (min 154, max 193).
Verdict
🏆 Ariyalur has better air quality with an AQI of 11 compared to Patna's 227. That's a significant difference of 216 points.