Thiruvananthapuram vs Ujjain
Side-by-side air quality comparison between Thiruvananthapuram and Ujjain.
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 | Thiruvananthapuram | Ujjain |
|---|---|---|
| PM2.5(µg/m³) | 5.20 | 31.20 |
| PM10(µg/m³) | 9.60 | 47.50 |
| NO₂(µg/m³) | 1.50 | 7.70 |
| SO₂(µg/m³) | 0.40 | 15.70 |
| O₃(µg/m³) | 38.00 | 57.00 |
| CO(µg/m³) | 91.00 | 219.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Thiruvananthapuram averaged an AQI of 56 while Ujjain averaged 116 — a 60-point (107%) gap, with Ujjain the more polluted and Thiruvananthapuram the cleaner of the two. On 2084 days when both cities reported, Thiruvananthapuram was cleaner on 1916 of them; the average daily gap was 67 AQI points.
Seasonality & days
Thiruvananthapuram peaks in January, while Ujjain peaks in November. Thiruvananthapuram logged 0% Severe days and 92% Good-or-Satisfactory days; Ujjain was 0.1% Severe and 33.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Thiruvananthapuram 172 days, Ujjain 67 days.
Year-over-year progress
Thiruvananthapuram has improved by 11 AQI points (16.4%) from 2017 to 2024; Ujjain has improved by 71 AQI points (38%) over the same window. The worst recorded day for Thiruvananthapuram reached AQI 387 at Plammoodu Thiruvananthapuram (PCB) on 2021-08-30; Ujjain hit AQI 500 at Mahakaleshwar Temple (MPPCB) on 2023-03-10.
Station-level disparity
Thiruvananthapuram spans 2 CPCB stations with a 7-point spread (min 57, max 64); Ujjain spans 1 stations with a 0-point spread (min 131, max 131).
Verdict
🏆 Thiruvananthapuram has better air quality with an AQI of 10 compared to Ujjain's 53.