Ariyalur vs Tālcher
Side-by-side air quality comparison between Ariyalur and Tālcher.
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 | Tālcher |
|---|---|---|
| PM2.5(µg/m³) | 7.50 | 65.90 |
| PM10(µg/m³) | 9.90 | 72.20 |
| NO₂(µg/m³) | 8.40 | 25.60 |
| SO₂(µg/m³) | 5.00 | 5.80 |
| O₃(µg/m³) | 42.00 | 19.00 |
| CO(µg/m³) | 137.00 | 508.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Tālcher averaged 127 — a 81-point (176%) gap, with Tālcher the more polluted and Ariyalur the cleaner of the two. On 243 days when both cities reported, Ariyalur was cleaner on 222 of them; the average daily gap was 81 AQI points.
Seasonality & days
Ariyalur peaks in March, while Tālcher peaks in December. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Tālcher was 0.2% Severe and 43.1% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Tālcher 44 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Tālcher has improved by 63 AQI points (33.2%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Tālcher hit AQI 414 at Talcher (OSPCB) on 2018-11-27.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Tālcher spans 1 stations with a 0-point spread (min 132, max 132).
Verdict
🏆 Ariyalur has better air quality with an AQI of 13 compared to Tālcher's 120. That's a significant difference of 107 points.