Guwahati vs Ujjain
Side-by-side air quality comparison between Guwahati 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 | Guwahati | Ujjain |
|---|---|---|
| PM2.5(µg/m³) | 33.80 | 32.40 |
| PM10(µg/m³) | 37.10 | 47.70 |
| NO₂(µg/m³) | 6.60 | 6.80 |
| SO₂(µg/m³) | 4.00 | 13.70 |
| O₃(µg/m³) | 81.00 | 66.00 |
| CO(µg/m³) | 397.00 | 215.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Guwahati averaged an AQI of 123 while Ujjain averaged 116 — a 7-point (6%) gap, with Guwahati the more polluted and Ujjain the cleaner of the two. On 1965 days when both cities reported, Guwahati was cleaner on 1012 of them; the average daily gap was 65 AQI points.
Seasonality & days
Guwahati peaks in January, while Ujjain peaks in November. Guwahati logged 0.1% Severe days and 44.9% Good-or-Satisfactory days; Ujjain was 0.1% Severe and 33.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Guwahati 105 days, Ujjain 67 days.
Year-over-year progress
Guwahati has worsened by 14 AQI points (12.8%) from 2019 to 2024; Ujjain has improved by 71 AQI points (38%) over the same window. The worst recorded day for Guwahati reached AQI 420 at Railway Colony (PCBA) on 2023-01-15; Ujjain hit AQI 500 at Mahakaleshwar Temple (MPPCB) on 2023-03-10.
Station-level disparity
Guwahati spans 4 CPCB stations with a 26-point spread (min 118, max 144); Ujjain spans 1 stations with a 0-point spread (min 131, max 131).
Verdict
🏆 Ujjain has better air quality with an AQI of 55 compared to Guwahati's 57.