Imphal vs Patna
Side-by-side air quality comparison between Imphal 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 | Imphal | Patna |
|---|---|---|
| PM2.5(µg/m³) | 45.80 | 99.00 |
| PM10(µg/m³) | 53.10 | 111.80 |
| NO₂(µg/m³) | 12.00 | 49.30 |
| SO₂(µg/m³) | 2.30 | 18.10 |
| O₃(µg/m³) | 33.00 | 19.00 |
| CO(µg/m³) | 414.00 | 704.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Imphal averaged an AQI of 110 while Patna averaged 172 — a 62-point (56%) gap, with Patna the more polluted and Imphal the cleaner of the two. On 551 days when both cities reported, Imphal was cleaner on 473 of them; the average daily gap was 130 AQI points.
Seasonality & days
Imphal peaks in October, while Patna peaks in December. Imphal logged 1.1% Severe days and 49.400000000000006% Good-or-Satisfactory days; Patna was 7.5% Severe and 19.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Imphal 103 days, Patna 30 days.
Year-over-year progress
Imphal has worsened by 23 AQI points (26.4%) from 2022 to 2024; Patna has improved by 40 AQI points (18.9%) over the same window. The worst recorded day for Imphal reached AQI 500 at University Imphal (PCB) on 2024-10-11; Patna hit AQI 491 at IGSC Planetarium Complex (BSPCB) on 2016-01-01.
Station-level disparity
Imphal spans 2 CPCB stations with a 4-point spread (min 97, max 101); Patna spans 6 stations with a 39-point spread (min 154, max 193).
Verdict
🏆 Imphal has better air quality with an AQI of 77 compared to Patna's 231. That's a significant difference of 154 points.