Kārwār vs Kollam
Side-by-side air quality comparison between Kārwār and Kollam.
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 | Kārwār | Kollam |
|---|---|---|
| PM2.5(µg/m³) | 5.80 | 6.20 |
| PM10(µg/m³) | 14.80 | 9.00 |
| NO₂(µg/m³) | 0.70 | 3.70 |
| SO₂(µg/m³) | 0.40 | 1.60 |
| O₃(µg/m³) | 57.00 | 35.00 |
| CO(µg/m³) | 102.00 | 103.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kārwār averaged an AQI of 55 while Kollam averaged 84 — a 29-point (53%) gap, with Kollam the more polluted and Kārwār the cleaner of the two. On 208 days when both cities reported, Kārwār was cleaner on 166 of them; the average daily gap was 39 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kārwār logged 0% Severe days and 92.7% Good-or-Satisfactory days; Kollam was 0% Severe and 81% Good-or-Satisfactory. Longest clean-air streaks: Kārwār 34 days, Kollam 65 days.
Year-over-year progress
Kārwār has improved by 72 AQI points (56.7%) from 2023 to 2024; Kollam has improved by 2 AQI points (2.3%) over the same window. The worst recorded day for Kārwār reached AQI 222 at KHB Colony (KSPCB) on 2023-12-21; Kollam hit AQI 272 at Polayathode Kollam (PCB) on 2024-04-06.
Station-level disparity
Kārwār spans 1 CPCB stations with a 0-point spread (min 58, max 58); Kollam spans 1 stations with a 0-point spread (min 84, max 84).
Verdict
🏆 Kollam has better air quality with an AQI of 10 compared to Kārwār's 15.