Ambala vs Thiruvananthapuram
Side-by-side air quality comparison between Ambala and Thiruvananthapuram.
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 | Ambala | Thiruvananthapuram |
|---|---|---|
| PM2.5(µg/m³) | 56.80 | 5.50 |
| PM10(µg/m³) | 204.40 | 9.70 |
| NO₂(µg/m³) | 1.50 | 1.20 |
| SO₂(µg/m³) | 15.40 | 0.50 |
| O₃(µg/m³) | 206.00 | 53.00 |
| CO(µg/m³) | 359.00 | 98.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ambala averaged an AQI of 94 while Thiruvananthapuram averaged 56 — a 38-point (68%) gap, with Ambala the more polluted and Thiruvananthapuram the cleaner of the two. On 1649 days when both cities reported, Thiruvananthapuram was cleaner on 1348 of them; the average daily gap was 73 AQI points.
Seasonality & days
Ambala peaks in November, while Thiruvananthapuram peaks in January. Ambala logged 0.2% Severe days and 46.5% Good-or-Satisfactory days; Thiruvananthapuram was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Ambala 44 days, Thiruvananthapuram 172 days.
Year-over-year progress
Ambala has improved by 52 AQI points (35.6%) from 2019 to 2024; Thiruvananthapuram has improved by 11 AQI points (16.4%) over the same window. The worst recorded day for Ambala reached AQI 452 at Patti Mehar (HSPCB) on 2020-11-04; Thiruvananthapuram hit AQI 387 at Plammoodu Thiruvananthapuram (PCB) on 2021-08-30.
Station-level disparity
Ambala spans 1 CPCB stations with a 0-point spread (min 126, max 126); Thiruvananthapuram spans 2 stations with a 7-point spread (min 57, max 64).
Verdict
🏆 Thiruvananthapuram has better air quality with an AQI of 10 compared to Ambala's 170. That's a significant difference of 160 points.