Nalbāri vs Purnia
Side-by-side air quality comparison between Nalbāri 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 | Nalbāri | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 54.50 | 105.90 |
| PM10(µg/m³) | 61.20 | 109.00 |
| NO₂(µg/m³) | 6.50 | 25.20 |
| SO₂(µg/m³) | 5.80 | 20.10 |
| O₃(µg/m³) | 123.00 | 67.00 |
| CO(µg/m³) | 407.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Nalbāri averaged an AQI of 129 while Purnia averaged 133 — a 4-point (3%) gap, with Purnia the more polluted and Nalbāri the cleaner of the two. On 527 days when both cities reported, Nalbāri was cleaner on 334 of them; the average daily gap was 74 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Nalbāri logged 0% Severe days and 41% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Nalbāri 18 days, Purnia 14 days.
Year-over-year progress
Nalbāri has improved by 72 AQI points (35.8%) from 2022 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Nalbāri reached AQI 384 at Bata Chowk (PCBA) on 2024-01-08; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Nalbāri spans 1 CPCB stations with a 0-point spread (min 141, max 141); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Nalbāri has better air quality with an AQI of 91 compared to Purnia's 253. That's a significant difference of 162 points.