Lucknow vs Purnia
Side-by-side air quality comparison between Lucknow 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 | Lucknow | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 38.30 | 88.20 |
| PM10(µg/m³) | 90.60 | 98.70 |
| NO₂(µg/m³) | 0.30 | 2.30 |
| SO₂(µg/m³) | 7.50 | 24.60 |
| O₃(µg/m³) | 176.00 | 239.00 |
| CO(µg/m³) | 239.00 | 359.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Lucknow averaged an AQI of 127 while Purnia averaged 133 — a 6-point (5%) gap, with Purnia the more polluted and Lucknow the cleaner of the two. On 603 days when both cities reported, Purnia was cleaner on 383 of them; the average daily gap was 74 AQI points.
Seasonality & days
Lucknow peaks in November, while Purnia peaks in January. Lucknow logged 6.6% Severe days and 19.4% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Lucknow 45 days, Purnia 14 days.
Year-over-year progress
Lucknow has improved by 89 AQI points (41.2%) from 2016 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Lucknow reached AQI 500 at Lalbagh (CPCB) on 2017-11-09; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Lucknow spans 7 CPCB stations with a 119-point spread (min 97, max 216); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Lucknow has better air quality with an AQI of 91 compared to Purnia's 194. That's a significant difference of 103 points.