Ariyalur vs Gwalior
Side-by-side air quality comparison between Ariyalur and Gwalior.
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 | Gwalior |
|---|---|---|
| PM2.5(µg/m³) | 6.80 | 39.10 |
| PM10(µg/m³) | 8.30 | 89.40 |
| NO₂(µg/m³) | 7.50 | 12.30 |
| SO₂(µg/m³) | 6.50 | 6.20 |
| O₃(µg/m³) | 43.00 | 61.00 |
| CO(µg/m³) | 133.00 | 248.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Gwalior averaged 136 — a 90-point (196%) gap, with Gwalior the more polluted and Ariyalur the cleaner of the two. On 314 days when both cities reported, Ariyalur was cleaner on 306 of them; the average daily gap was 121 AQI points.
Seasonality & days
Ariyalur peaks in March, while Gwalior peaks in November. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Gwalior was 0.4% Severe and 31.5% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Gwalior 47 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Gwalior has improved by 12 AQI points (8.1%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Gwalior hit AQI 450 at City Center (MPPCB) on 2021-11-09.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Gwalior spans 4 stations with a 53-point spread (min 112, max 165).
Verdict
🏆 Ariyalur has better air quality with an AQI of 11 compared to Gwalior's 90. That's a significant difference of 79 points.