Guwahati vs Tirunelveli
Side-by-side air quality comparison between Guwahati and Tirunelveli.
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 | Guwahati | Tirunelveli |
|---|---|---|
| PM2.5(µg/m³) | 39.70 | 2.10 |
| PM10(µg/m³) | 46.20 | 2.60 |
| NO₂(µg/m³) | 1.50 | 1.60 |
| SO₂(µg/m³) | 5.00 | 0.70 |
| O₃(µg/m³) | 148.00 | 53.00 |
| CO(µg/m³) | 345.00 | 112.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Guwahati averaged an AQI of 123 while Tirunelveli averaged 30 — a 93-point (310%) gap, with Guwahati the more polluted and Tirunelveli the cleaner of the two. On 119 days when both cities reported, Tirunelveli was cleaner on 118 of them; the average daily gap was 98 AQI points.
Seasonality & days
Guwahati peaks in January, while Tirunelveli peaks in October. Guwahati logged 0.1% Severe days and 44.9% Good-or-Satisfactory days; Tirunelveli was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Guwahati 105 days, Tirunelveli 31 days.
Year-over-year progress
The worst recorded day for Guwahati reached AQI 420 at Railway Colony (PCBA) on 2023-01-15; Tirunelveli hit AQI 42 at Municipal Corporation Office (TNPCB) on 2024-10-30.
Station-level disparity
Guwahati spans 4 CPCB stations with a 26-point spread (min 118, max 144); Tirunelveli spans 1 stations with a 0-point spread (min 30, max 30).
Verdict
🏆 Tirunelveli has better air quality with an AQI of 4 compared to Guwahati's 67. That's a significant difference of 63 points.