Bettiah vs Tirunelveli
Side-by-side air quality comparison between Bettiah 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 | Bettiah | Tirunelveli |
|---|---|---|
| PM2.5(µg/m³) | 99.70 | 4.30 |
| PM10(µg/m³) | 113.90 | 5.30 |
| NO₂(µg/m³) | 54.20 | 6.20 |
| SO₂(µg/m³) | 11.70 | 1.80 |
| O₃(µg/m³) | 4.00 | 26.00 |
| CO(µg/m³) | 1655.00 | 139.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bettiah averaged an AQI of 127 while Tirunelveli averaged 30 — a 97-point (323%) gap, with Bettiah the more polluted and Tirunelveli the cleaner of the two. On 77 days when both cities reported, Tirunelveli was cleaner on 77 of them; the average daily gap was 105 AQI points.
Seasonality & days
Bettiah peaks in November, while Tirunelveli peaks in October. Bettiah logged 3.2% Severe days and 32.3% Good-or-Satisfactory days; Tirunelveli was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Bettiah 20 days, Tirunelveli 31 days.
Year-over-year progress
The worst recorded day for Bettiah reached AQI 470 at Kamalnath Nagar (BSPCB) on 2023-01-01; Tirunelveli hit AQI 42 at Municipal Corporation Office (TNPCB) on 2024-10-30.
Station-level disparity
Bettiah spans 1 CPCB stations with a 0-point spread (min 173, max 173); Tirunelveli spans 1 stations with a 0-point spread (min 30, max 30).
Verdict
🏆 Tirunelveli has better air quality with an AQI of 7 compared to Bettiah's 233. That's a significant difference of 226 points.