Ambala vs Nagapattinam
Side-by-side air quality comparison between Ambala 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 | Ambala | Nagapattinam |
|---|---|---|
| PM2.5(µg/m³) | 56.80 | 12.60 |
| PM10(µg/m³) | 204.40 | 17.60 |
| NO₂(µg/m³) | 1.50 | 1.70 |
| SO₂(µg/m³) | 15.40 | 3.50 |
| O₃(µg/m³) | 206.00 | 102.00 |
| CO(µg/m³) | 359.00 | 180.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ambala averaged an AQI of 94 while Nagapattinam averaged 60 — a 34-point (57%) gap, with Ambala the more polluted and Nagapattinam the cleaner of the two. On 41 days when both cities reported, Nagapattinam was cleaner on 38 of them; the average daily gap was 83 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Ambala logged 0.2% Severe days and 46.5% Good-or-Satisfactory days; Nagapattinam was 0% Severe and 91.5% Good-or-Satisfactory. Longest clean-air streaks: Ambala 44 days, Nagapattinam 8 days.
Year-over-year progress
The worst recorded day for Ambala reached AQI 452 at Patti Mehar (HSPCB) on 2020-11-04; Nagapattinam hit AQI 113 at Velippalayam (TNPCB) on 2024-12-16.
Station-level disparity
Ambala spans 1 CPCB stations with a 0-point spread (min 126, max 126); 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 Ambala's 170. That's a significant difference of 149 points.