Gwalior vs Thiruvananthapuram
Side-by-side air quality comparison between Gwalior 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 | Gwalior | Thiruvananthapuram |
|---|---|---|
| PM2.5(µg/m³) | 39.10 | 5.30 |
| PM10(µg/m³) | 89.40 | 9.50 |
| NO₂(µg/m³) | 12.30 | 1.50 |
| SO₂(µg/m³) | 6.20 | 0.40 |
| O₃(µg/m³) | 61.00 | 38.00 |
| CO(µg/m³) | 248.00 | 102.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gwalior averaged an AQI of 136 while Thiruvananthapuram averaged 56 — a 80-point (143%) gap, with Gwalior the more polluted and Thiruvananthapuram the cleaner of the two. On 1390 days when both cities reported, Thiruvananthapuram was cleaner on 1245 of them; the average daily gap was 95 AQI points.
Seasonality & days
Gwalior peaks in November, while Thiruvananthapuram peaks in January. Gwalior logged 0.4% Severe days and 31.5% Good-or-Satisfactory days; Thiruvananthapuram was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Gwalior 47 days, Thiruvananthapuram 172 days.
Year-over-year progress
Gwalior has improved by 12 AQI points (8.1%) from 2020 to 2024; Thiruvananthapuram has improved by 11 AQI points (16.4%) over the same window. The worst recorded day for Gwalior reached AQI 450 at City Center (MPPCB) on 2021-11-09; Thiruvananthapuram hit AQI 387 at Plammoodu Thiruvananthapuram (PCB) on 2021-08-30.
Station-level disparity
Gwalior spans 4 CPCB stations with a 53-point spread (min 112, max 165); 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 Gwalior's 90. That's a significant difference of 80 points.