Kollam vs Sagar
Side-by-side air quality comparison between Kollam and Sagar.
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 | Sagar |
|---|---|---|
| PM2.5(µg/m³) | 5.50 | 24.90 |
| PM10(µg/m³) | 7.90 | 41.00 |
| NO₂(µg/m³) | 3.80 | 11.80 |
| SO₂(µg/m³) | 1.60 | 4.10 |
| O₃(µg/m³) | 33.00 | 61.00 |
| CO(µg/m³) | 96.00 | 211.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kollam averaged an AQI of 84 while Sagar averaged 96 — a 12-point (14%) gap, with Sagar the more polluted and Kollam the cleaner of the two. On 1016 days when both cities reported, Sagar was cleaner on 555 of them; the average daily gap was 44 AQI points.
Seasonality & days
Kollam peaks in January, while Sagar peaks in November. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Sagar was 0% Severe and 69.9% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Sagar 57 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Sagar has worsened by 24 AQI points (33.3%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Sagar hit AQI 347 at Civil Lines (MPPCB) on 2024-12-25.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Sagar spans 2 stations with a 45-point spread (min 73, max 118).
Verdict
🏆 Kollam has better air quality with an AQI of 9 compared to Sagar's 42.