Kollam vs Nagpur
Side-by-side air quality comparison between Kollam and Nagpur.
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 | Nagpur |
|---|---|---|
| PM2.5(µg/m³) | 4.60 | 20.30 |
| PM10(µg/m³) | 7.10 | 25.30 |
| NO₂(µg/m³) | 4.40 | 23.20 |
| SO₂(µg/m³) | 1.50 | 12.30 |
| O₃(µg/m³) | 30.00 | 42.00 |
| CO(µg/m³) | 89.00 | 174.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kollam averaged an AQI of 84 while Nagpur averaged 104 — a 20-point (24%) gap, with Nagpur the more polluted and Kollam the cleaner of the two. On 871 days when both cities reported, Kollam was cleaner on 511 of them; the average daily gap was 44 AQI points.
Seasonality & days
Kollam peaks in January, while Nagpur peaks in November. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Nagpur was 0% Severe and 60.599999999999994% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Nagpur 68 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Nagpur has improved by 37 AQI points (26.2%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Nagpur hit AQI 342 at Opp GPO Civil Lines (MPCB) on 2022-12-03.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Nagpur spans 4 stations with a 9-point spread (min 98, max 107).
Verdict
🏆 Kollam has better air quality with an AQI of 8 compared to Nagpur's 34.