Thiruvananthapuram vs Tonk
Side-by-side air quality comparison between Thiruvananthapuram and Tonk.
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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Thiruvananthapuram averaged an AQI of 56 while Tonk averaged 142 — a 86-point (154%) gap, with Tonk the more polluted and Thiruvananthapuram the cleaner of the two. On 298 days when both cities reported, Thiruvananthapuram was cleaner on 254 of them; the average daily gap was 75 AQI points.
Seasonality & days
Thiruvananthapuram peaks in January, while Tonk peaks in November. Thiruvananthapuram logged 0% Severe days and 92% Good-or-Satisfactory days; Tonk was 0% Severe and 28.200000000000003% Good-or-Satisfactory. Longest clean-air streaks: Thiruvananthapuram 172 days, Tonk 11 days.
Year-over-year progress
Thiruvananthapuram has improved by 11 AQI points (16.4%) from 2017 to 2024; Tonk has improved by 14 AQI points (9%) over the same window. The worst recorded day for Thiruvananthapuram reached AQI 387 at Plammoodu Thiruvananthapuram (PCB) on 2021-08-30; Tonk hit AQI 368 at Shastri Nagar (RSPCB) on 2023-11-17.
Station-level disparity
Thiruvananthapuram spans 2 CPCB stations with a 7-point spread (min 57, max 64); Tonk spans 1 stations with a 0-point spread (min 148, max 148).