Select a date and city to look up historical PM2.5, PM10, and air pollution data worldwide
| Time | PM2.5 (μg/m³) | PM10 (μg/m³) | NO₂ (μg/m³) | O₃ (μg/m³) | EU AQI |
|---|
Cross-reference air quality levels on specific dates with respiratory health events for documentation or research.
Analyse correlations between weather conditions and air pollution, or study seasonal and regional PM2.5 patterns.
Use objective historical air quality data as evidence for outdoor event cancellations or pollution-related claims.
Check historical air quality patterns at your destination to decide whether to pack a mask or air purifier.
Hourly fine and coarse particulate matter concentration (μg/m³). Daily average and peak values shown in the summary.
Hourly NO₂ concentration (μg/m³) from vehicle emissions and industrial sources.
Hourly ground-level ozone concentration (μg/m³). Levels tend to be higher in summer and on hot days.
European Air Quality Index. Good (0–50) → Moderate → Poor → Very Poor (150+) in four levels.