Kollam vs Rājsamand
Side-by-side air quality comparison between Kollam and Rājsamand.
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 | Rājsamand |
|---|---|---|
| PM2.5(µg/m³) | 5.50 | 18.00 |
| PM10(µg/m³) | 7.90 | 29.30 |
| NO₂(µg/m³) | 3.80 | 4.70 |
| SO₂(µg/m³) | 1.60 | 3.90 |
| O₃(µg/m³) | 33.00 | 64.00 |
| CO(µg/m³) | 96.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kollam averaged an AQI of 84 while Rājsamand averaged 88 — a 4-point (5%) gap, with Rājsamand the more polluted and Kollam the cleaner of the two. On 468 days when both cities reported, Kollam was cleaner on 282 of them; the average daily gap was 42 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Rājsamand was 0% Severe and 69.7% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Rājsamand 42 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Rājsamand has improved by 13 AQI points (12.9%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Rājsamand hit AQI 320 at Dhoinda (RSPCB) on 2024-08-28.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Rājsamand spans 1 stations with a 0-point spread (min 94, max 94).
Verdict
🏆 Kollam has better air quality with an AQI of 9 compared to Rājsamand's 30.