Gwalior vs Nagapattinam
Side-by-side air quality comparison between Gwalior 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 | Gwalior | Nagapattinam |
|---|---|---|
| PM2.5(µg/m³) | 40.70 | 12.00 |
| PM10(µg/m³) | 97.60 | 15.60 |
| NO₂(µg/m³) | 14.70 | 10.70 |
| SO₂(µg/m³) | 5.70 | 3.80 |
| O₃(µg/m³) | 49.00 | 35.00 |
| CO(µg/m³) | 247.00 | 206.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gwalior averaged an AQI of 136 while Nagapattinam averaged 60 — a 76-point (127%) gap, with Gwalior the more polluted and Nagapattinam the cleaner of the two. On 47 days when both cities reported, Nagapattinam was cleaner on 47 of them; the average daily gap was 151 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Gwalior logged 0.4% Severe days and 31.5% Good-or-Satisfactory days; Nagapattinam was 0% Severe and 91.5% Good-or-Satisfactory. Longest clean-air streaks: Gwalior 47 days, Nagapattinam 8 days.
Year-over-year progress
The worst recorded day for Gwalior reached AQI 450 at City Center (MPPCB) on 2021-11-09; Nagapattinam hit AQI 113 at Velippalayam (TNPCB) on 2024-12-16.
Station-level disparity
Gwalior spans 4 CPCB stations with a 53-point spread (min 112, max 165); Nagapattinam spans 1 stations with a 0-point spread (min 60, max 60).
Verdict
🏆 Nagapattinam has better air quality with an AQI of 20 compared to Gwalior's 98. That's a significant difference of 78 points.