Kolār vs Thiruvananthapuram
Side-by-side air quality comparison between Kolār 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 | Kolār | Thiruvananthapuram |
|---|---|---|
| PM2.5(µg/m³) | 5.10 | 5.30 |
| PM10(µg/m³) | 6.20 | 9.50 |
| NO₂(µg/m³) | 8.80 | 1.50 |
| SO₂(µg/m³) | 4.30 | 0.40 |
| O₃(µg/m³) | 34.00 | 38.00 |
| CO(µg/m³) | 183.00 | 102.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kolār averaged an AQI of 65 while Thiruvananthapuram averaged 56 — a 9-point (16%) gap, with Kolār the more polluted and Thiruvananthapuram the cleaner of the two. On 985 days when both cities reported, Kolār was cleaner on 568 of them; the average daily gap was 27 AQI points.
Seasonality & days
Kolār peaks in September, while Thiruvananthapuram peaks in January. Kolār logged 0.9% Severe days and 85.30000000000001% Good-or-Satisfactory days; Thiruvananthapuram was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Kolār 17 days, Thiruvananthapuram 172 days.
Year-over-year progress
Kolār has improved by 56 AQI points (46.3%) from 2018 to 2024; Thiruvananthapuram has improved by 11 AQI points (16.4%) over the same window. The worst recorded day for Kolār reached AQI 500 at Tamaka Ind Area (KSPCB) on 2018-09-18; Thiruvananthapuram hit AQI 387 at Plammoodu Thiruvananthapuram (PCB) on 2021-08-30.
Station-level disparity
Kolār spans 1 CPCB stations with a 0-point spread (min 71, max 71); Thiruvananthapuram spans 2 stations with a 7-point spread (min 57, max 64).
Verdict
🏆 Kolār has better air quality with an AQI of 9 compared to Thiruvananthapuram's 10.