Navi Mumbai vs Purnia
Side-by-side air quality comparison between Navi Mumbai 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
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Navi Mumbai | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 21.70 | 105.90 |
| PM10(µg/m³) | 43.70 | 109.00 |
| NO₂(µg/m³) | 16.10 | 25.20 |
| SO₂(µg/m³) | 24.00 | 20.10 |
| O₃(µg/m³) | 31.00 | 67.00 |
| CO(µg/m³) | 157.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Navi Mumbai averaged an AQI of 107 while Purnia averaged 133 — a 26-point (24%) gap, with Purnia the more polluted and Navi Mumbai the cleaner of the two. On 599 days when both cities reported, Purnia was cleaner on 302 of them; the average daily gap was 65 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Navi Mumbai logged 0.2% Severe days and 43.6% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Navi Mumbai 57 days, Purnia 14 days.
Year-over-year progress
Navi Mumbai has worsened by 29 AQI points (37.2%) from 2016 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Navi Mumbai reached AQI 477 at Airoli Navi (MPCB) on 2019-04-14; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Navi Mumbai spans 8 CPCB stations with a 37-point spread (min 93, max 130); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Navi Mumbai has better air quality with an AQI of 44 compared to Purnia's 253. That's a significant difference of 209 points.