Kollam vs Vijayawada
Side-by-side air quality comparison between Kollam and Vijayawada.
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 | Vijayawada |
|---|---|---|
| PM2.5(µg/m³) | 4.60 | 18.50 |
| PM10(µg/m³) | 7.10 | 20.40 |
| NO₂(µg/m³) | 4.40 | 9.60 |
| SO₂(µg/m³) | 1.50 | 6.00 |
| O₃(µg/m³) | 30.00 | 73.00 |
| CO(µg/m³) | 89.00 | 276.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kollam averaged an AQI of 84 while Vijayawada averaged 64 — a 20-point (31%) gap, with Kollam the more polluted and Vijayawada the cleaner of the two. On 455 days when both cities reported, Kollam was cleaner on 224 of them; the average daily gap was 36 AQI points.
Seasonality & days
Kollam peaks in January, while Vijayawada peaks in February. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Vijayawada was 0.2% Severe and 86.8% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Vijayawada 72 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Vijayawada has improved by 21 AQI points (24.7%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Vijayawada hit AQI 500 at Kanuru (APPCB) on 2023-04-04.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Vijayawada spans 5 stations with a 9-point spread (min 65, max 74).
Verdict
🏆 Kollam has better air quality with an AQI of 8 compared to Vijayawada's 31.