Guwahati vs Nagapattinam
Side-by-side air quality comparison between Guwahati 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 | Guwahati | Nagapattinam |
|---|---|---|
| PM2.5(µg/m³) | 31.90 | 12.50 |
| PM10(µg/m³) | 36.00 | 16.20 |
| NO₂(µg/m³) | 5.40 | 9.80 |
| SO₂(µg/m³) | 4.20 | 4.10 |
| O₃(µg/m³) | 97.00 | 38.00 |
| CO(µg/m³) | 393.00 | 211.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Guwahati averaged an AQI of 123 while Nagapattinam averaged 60 — a 63-point (105%) gap, with Guwahati the more polluted and Nagapattinam the cleaner of the two. On 47 days when both cities reported, Nagapattinam was cleaner on 45 of them; the average daily gap was 99 AQI points.
Seasonality & days
Guwahati peaks in January, while Nagapattinam peaks in November. Guwahati logged 0.1% Severe days and 44.9% Good-or-Satisfactory days; Nagapattinam was 0% Severe and 91.5% Good-or-Satisfactory. Longest clean-air streaks: Guwahati 105 days, Nagapattinam 8 days.
Year-over-year progress
The worst recorded day for Guwahati reached AQI 420 at Railway Colony (PCBA) on 2023-01-15; Nagapattinam hit AQI 113 at Velippalayam (TNPCB) on 2024-12-16.
Station-level disparity
Guwahati spans 4 CPCB stations with a 26-point spread (min 118, max 144); Nagapattinam spans 1 stations with a 0-point spread (min 60, max 60).
Verdict
🏆 Nagapattinam has better air quality with an AQI of 21 compared to Guwahati's 54.