Bulandshahr vs Ujjain
Side-by-side air quality comparison between Bulandshahr 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 | Bulandshahr | Ujjain |
|---|---|---|
| PM2.5(µg/m³) | 71.00 | 32.40 |
| PM10(µg/m³) | 110.10 | 47.70 |
| NO₂(µg/m³) | 35.60 | 6.80 |
| SO₂(µg/m³) | 9.70 | 13.70 |
| O₃(µg/m³) | 39.00 | 66.00 |
| CO(µg/m³) | 517.00 | 215.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bulandshahr averaged an AQI of 142 while Ujjain averaged 116 — a 26-point (22%) gap, with Bulandshahr the more polluted and Ujjain the cleaner of the two. On 2128 days when both cities reported, Ujjain was cleaner on 1552 of them; the average daily gap was 73 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Bulandshahr logged 3.2% Severe days and 27.099999999999998% Good-or-Satisfactory days; Ujjain was 0.1% Severe and 33.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Bulandshahr 41 days, Ujjain 67 days.
Year-over-year progress
Bulandshahr has improved by 82 AQI points (36.6%) from 2018 to 2024; Ujjain has improved by 71 AQI points (38%) over the same window. The worst recorded day for Bulandshahr reached AQI 500 at Yamunapuram (UPPCB) on 2018-06-13; Ujjain hit AQI 500 at Mahakaleshwar Temple (MPPCB) on 2023-03-10.
Station-level disparity
Bulandshahr spans 1 CPCB stations with a 0-point spread (min 180, max 180); 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 Bulandshahr's 137. That's a significant difference of 82 points.