Aizawl vs Purnia
Side-by-side air quality comparison between Aizawl 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 | Aizawl | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 30.30 | 112.00 |
| PM10(µg/m³) | 39.70 | 115.70 |
| NO₂(µg/m³) | 8.00 | 31.10 |
| SO₂(µg/m³) | 3.30 | 18.40 |
| O₃(µg/m³) | 48.00 | 42.00 |
| CO(µg/m³) | 254.00 | 756.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Aizawl averaged an AQI of 46 while Purnia averaged 133 — a 87-point (189%) gap, with Purnia the more polluted and Aizawl the cleaner of the two. On 797 days when both cities reported, Aizawl was cleaner on 772 of them; the average daily gap was 135 AQI points.
Seasonality & days
Aizawl peaks in March, while Purnia peaks in January. Aizawl logged 0% Severe days and 94.2% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Aizawl 76 days, Purnia 14 days.
Year-over-year progress
Aizawl has worsened by 16 AQI points (53.3%) from 2020 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Aizawl reached AQI 208 at Sikulpuikawn Aizawl (PCB) on 2021-01-20; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Aizawl spans 1 CPCB stations with a 0-point spread (min 43, max 43); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Aizawl has better air quality with an AQI of 51 compared to Purnia's 274. That's a significant difference of 223 points.