Mumbai vs Ujjain
Side-by-side air quality comparison between Mumbai and Ujjain.
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 | Mumbai | Ujjain |
|---|---|---|
| PM2.5(µg/m³) | 17.80 | 32.40 |
| PM10(µg/m³) | 42.60 | 47.70 |
| NO₂(µg/m³) | 10.10 | 6.80 |
| SO₂(µg/m³) | 10.60 | 13.70 |
| O₃(µg/m³) | 42.00 | 66.00 |
| CO(µg/m³) | 173.00 | 215.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Mumbai averaged an AQI of 93 while Ujjain averaged 116 — a 23-point (25%) gap, with Ujjain the more polluted and Mumbai the cleaner of the two. On 2045 days when both cities reported, Ujjain was cleaner on 1359 of them; the average daily gap was 65 AQI points.
Seasonality & days
Mumbai peaks in December, while Ujjain peaks in November. Mumbai logged 0.5% Severe days and 34% Good-or-Satisfactory days; Ujjain was 0.1% Severe and 33.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Mumbai 58 days, Ujjain 67 days.
Year-over-year progress
Mumbai has improved by 4 AQI points (4.1%) from 2016 to 2024; Ujjain has improved by 71 AQI points (38%) over the same window. The worst recorded day for Mumbai reached AQI 500 at Vile Parle West (MPCB) on 2022-08-15; Ujjain hit AQI 500 at Mahakaleshwar Temple (MPPCB) on 2023-03-10.
Station-level disparity
Mumbai spans 29 CPCB stations with a 74-point spread (min 77, max 151); Ujjain spans 1 stations with a 0-point spread (min 131, max 131).
Verdict
🏆 Mumbai has better air quality with an AQI of 43 compared to Ujjain's 55.