Kollam vs Ranipet
Side-by-side air quality comparison between Kollam and Ranipet.
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 | Ranipet |
|---|---|---|
| PM2.5(µg/m³) | 5.50 | 7.00 |
| PM10(µg/m³) | 7.90 | 8.40 |
| NO₂(µg/m³) | 3.80 | 8.50 |
| SO₂(µg/m³) | 1.60 | 4.30 |
| O₃(µg/m³) | 33.00 | 44.00 |
| CO(µg/m³) | 96.00 | 143.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kollam averaged an AQI of 84 while Ranipet averaged 75 — a 9-point (12%) gap, with Kollam the more polluted and Ranipet the cleaner of the two. On 46 days when both cities reported, Ranipet was cleaner on 26 of them; the average daily gap was 39 AQI points.
Seasonality & days
Kollam peaks in January, while Ranipet peaks in November. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Ranipet was 0% Severe and 67.80000000000001% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Ranipet 10 days.
Year-over-year progress
The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Ranipet hit AQI 224 at VOC Nagar SIPCOT (TNPCB) on 2024-12-17.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Ranipet spans 1 stations with a 0-point spread (min 75, max 75).
Verdict
🏆 Kollam has better air quality with an AQI of 9 compared to Ranipet's 12.