Kollam vs Vrindāvan
Side-by-side air quality comparison between Kollam and Vrindāvan.
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 | Kollam | Vrindāvan |
|---|---|---|
| PM2.5(µg/m³) | 4.60 | 73.80 |
| PM10(µg/m³) | 7.10 | 246.80 |
| NO₂(µg/m³) | 4.40 | 22.60 |
| SO₂(µg/m³) | 1.50 | 9.40 |
| O₃(µg/m³) | 30.00 | 53.00 |
| CO(µg/m³) | 89.00 | 499.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kollam averaged an AQI of 84 while Vrindāvan averaged 108 — a 24-point (29%) gap, with Vrindāvan the more polluted and Kollam the cleaner of the two. On 992 days when both cities reported, Kollam was cleaner on 644 of them; the average daily gap was 56 AQI points.
Seasonality & days
Kollam peaks in January, while Vrindāvan peaks in November. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Vrindāvan was 0.6% Severe and 43.8% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Vrindāvan 52 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Vrindāvan has improved by 53 AQI points (32.9%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Vrindāvan hit AQI 475 at Omex Eternity (UPPCB) on 2021-11-08.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Vrindāvan spans 1 stations with a 0-point spread (min 115, max 115).
Verdict
🏆 Kollam has better air quality with an AQI of 8 compared to Vrindāvan's 198. That's a significant difference of 190 points.