Delhi vs Patna
Side-by-side air quality comparison between Delhi and Patna.
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 | Delhi | Patna |
|---|---|---|
| PM2.5(µg/m³) | 74.70 | 86.40 |
| PM10(µg/m³) | 170.40 | 105.20 |
| NO₂(µg/m³) | 33.60 | 19.70 |
| SO₂(µg/m³) | 36.40 | 20.00 |
| O₃(µg/m³) | 119.00 | 139.00 |
| CO(µg/m³) | 608.00 | 556.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Delhi averaged an AQI of 210 while Patna averaged 172 — a 38-point (22%) gap, with Delhi the more polluted and Patna the cleaner of the two. On 2926 days when both cities reported, Patna was cleaner on 2338 of them; the average daily gap was 91 AQI points.
Seasonality & days
Delhi peaks in November, while Patna peaks in December. Delhi logged 18.7% Severe days and 1.7% Good-or-Satisfactory days; Patna was 7.5% Severe and 19.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Delhi 3 days, Patna 30 days.
Year-over-year progress
Delhi has improved by 42 AQI points (16.7%) from 2016 to 2024; Patna has improved by 40 AQI points (18.9%) over the same window. The worst recorded day for Delhi reached AQI 500 at Ashok Vihar (DPCC) on 2024-11-18; Patna hit AQI 491 at IGSC Planetarium Complex (BSPCB) on 2016-01-01.
Station-level disparity
Delhi spans 39 CPCB stations with a 84-point spread (min 178, max 262); Patna spans 6 stations with a 39-point spread (min 154, max 193).
Verdict
🏆 Delhi has better air quality with an AQI of 150 compared to Patna's 188.