Nagapattinam vs Purnia
Side-by-side air quality comparison between Nagapattinam and Purnia.
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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Nagapattinam averaged an AQI of 60 while Purnia averaged 133 — a 73-point (122%) gap, with Purnia the more polluted and Nagapattinam the cleaner of the two. On 42 days when both cities reported, Nagapattinam was cleaner on 39 of them; the average daily gap was 99 AQI points.
Seasonality & days
Nagapattinam peaks in November, while Purnia peaks in January. Nagapattinam logged 0% Severe days and 91.5% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Nagapattinam 8 days, Purnia 14 days.
Year-over-year progress
The worst recorded day for Nagapattinam reached AQI 113 at Velippalayam (TNPCB) on 2024-12-16; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Nagapattinam spans 1 CPCB stations with a 0-point spread (min 60, max 60); Purnia spans 1 stations with a 0-point spread (min 176, max 176).