United States
Moderate
Air quality in San Diego is acceptable. Consider reducing intensity or duration.
Excellent
Humidity is high. Take it easier than usual
Data from Open-Meteo • Updated 7:23 AM PDT
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San Diego enjoys some of the best air quality among major California cities, thanks to consistent ocean breezes. However, wildfire season can bring dangerous smoke events, and summer ozone occasionally affects inland areas. The coastal location helps maintain generally Good AQI readings.
Based on hourly averages, 2023–2025 · Data: Open-Meteo / CAMS
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<a href="https://www.aeriqo.app/cities/san-diego"><img src="https://www.aeriqo.app/api/badge/san-diego" width="300" height="64" alt="Live air quality in San Diego (Aeriqo)" loading="lazy"></a>
San Diego typically sees AQI readings between 25 and 55, among the best for major US cities. Coastal areas generally stay in the Good range, while inland valleys may see Moderate levels in summer.
Morning runs along the coast offer excellent air quality year-round. During wildfire season (typically August through November), check conditions before heading out as smoke can rapidly change the AQI.
Deep dive into pollutants, thresholds, and how air quality affects your running performance.
Quick threshold lookup for every AQI level. Know when to run and when to stay indoors.
Practical rules for training during smoke events: when to go indoors and how to recover.
