Kollam vs Nagapattinam
Side-by-side air quality comparison between Kollam and Nagapattinam.
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 | Nagapattinam |
|---|---|---|
| PM2.5(µg/m³) | 5.50 | 12.50 |
| PM10(µg/m³) | 7.90 | 16.20 |
| NO₂(µg/m³) | 3.80 | 9.80 |
| SO₂(µg/m³) | 1.60 | 4.10 |
| O₃(µg/m³) | 33.00 | 38.00 |
| CO(µg/m³) | 96.00 | 211.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kollam averaged an AQI of 84 while Nagapattinam averaged 60 — a 24-point (40%) gap, with Kollam the more polluted and Nagapattinam the cleaner of the two. Across 37 shared days the head-to-head is almost even, with an average daily gap of 33 AQI points.
Seasonality & days
Kollam peaks in January, while Nagapattinam peaks in November. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Nagapattinam was 0% Severe and 91.5% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Nagapattinam 8 days.
Year-over-year progress
The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Nagapattinam hit AQI 113 at Velippalayam (TNPCB) on 2024-12-16.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Nagapattinam spans 1 stations with a 0-point spread (min 60, max 60).
Verdict
🏆 Kollam has better air quality with an AQI of 9 compared to Nagapattinam's 21.