Silchar vs Tiruchirappalli
Side-by-side air quality comparison between Silchar and Tiruchirappalli.
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 | Silchar | Tiruchirappalli |
|---|---|---|
| PM2.5(µg/m³) | 53.70 | 5.40 |
| PM10(µg/m³) | 64.50 | 6.60 |
| NO₂(µg/m³) | 14.10 | 7.20 |
| SO₂(µg/m³) | 7.40 | 3.10 |
| O₃(µg/m³) | 94.00 | 38.00 |
| CO(µg/m³) | 289.00 | 134.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Silchar averaged an AQI of 52 while Tiruchirappalli averaged 50 — a 2-point (4%) gap, with Silchar the more polluted and Tiruchirappalli the cleaner of the two. On 86 days when both cities reported, Tiruchirappalli was cleaner on 46 of them; the average daily gap was 23 AQI points.
Seasonality & days
Silchar peaks in February, while Tiruchirappalli peaks in January. Silchar logged 0% Severe days and 100% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Silchar 87 days, Tiruchirappalli 46 days.
Year-over-year progress
Silchar has worsened by 11 AQI points (26.8%) from 2023 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Silchar reached AQI 89 at Tarapur (PCBA) on 2023-04-29; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Silchar spans 1 CPCB stations with a 0-point spread (min 47, max 47); Tiruchirappalli spans 1 stations with a 0-point spread (min 52, max 52).
Verdict
🏆 Tiruchirappalli has better air quality with an AQI of 9 compared to Silchar's 90. That's a significant difference of 81 points.