San Diego Air Quality Index & Realtime Air Pollution
Primary Air Pollutants San Diego (California)
Hourly forecast San Diego (California)
Health Recommendations for San Diego Residents
Based on current air quality: Moderate · AQI 59
UV Index
0.15
Low
Safe to be outside. Minimal UV risk.
Wind
7 km/h
Light breeze — leaves rustling gently.
Historical AQI Data San Diego (California)
United States Major Cities AQI Overview
New York
65
Temp.
20°C
Hum.
36%
Los Angeles
65
Temp.
20.2°C
Hum.
71%
Chicago
63
Temp.
19°C
Hum.
59%
Houston
45
Temp.
22.7°C
Hum.
94%
Phoenix
64
Temp.
38°C
Hum.
8%
San Francisco
53
Temp.
18°C
Hum.
62%
Seattle
51
Temp.
18°C
Hum.
58%
Denver
69
Temp.
20.5°C
Hum.
34%
Philadelphia
68
Temp.
22.1°C
Hum.
37%
San Antonio
43
Temp.
23.9°C
Hum.
83%
Dallas
98
Temp.
28.7°C
Hum.
64%
Atlanta
53
Temp.
21.1°C
Hum.
49%
Most Polluted Cities by AQI United States
Explore live air quality data for the most polluted cities in the country.
| Rank | City | AQI | AQI Status | Standard Value | Notify |
|---|---|---|---|---|---|
| 1 | Fort Worth, Texas | 119 | Poor | 3x above Standard | |
| 2 | Dallas, Texas | 93 | Moderate | 2x above Standard | |
| 3 | Denton, Texas | 81 | Moderate | 2x above Standard | |
| 4 | Pittsburgh, Pennsylvania | 79 | Moderate | 1x above Standard | |
| 5 | Cincinnati, Ohio | 75 | Moderate | 1x above Standard | |
| 6 | Riverside, California | 75 | Moderate | 3x above Standard | |
| 7 | San Bernardino, California | 75 | Moderate | 3x above Standard | |
| 8 | McKinney, Texas | 73 | Moderate | 2x above Standard | |
| 9 | Charlotte, North Carolina | 72 | Moderate | 1x above Standard | |
| 10 | Knoxville, Tennessee | 67 | Moderate | 1x above Standard |
Health Advice For People Living in San Diego
per day
Breathing the air in this location is equivalent to smoking 0.7 cigarettes a day.
Prevent Health Problems: Understand Your Risks
San Diego · Current air quality: Moderate · AQI 59
Headaches
Risk of Headaches symptoms is Mild when AQI of San Diego is Moderate (51-100).
You may observe: Pressure or tightness around the forehead and temples, Sensitivity to light or smell, Fatigue or difficulty concentrating.
- Choose indoor, clean indoor air when the AQI is elevated.
- Stay hydrated and take short breaks from devices or harsh light if you are migraine-prone.
- If you Make use of prescribed migraine meds, Keep close them accessible.
- Try not to do intense outdoor exercise during worse AQI periods.
- Don’t ignore worsening symptoms that feel unusual for you.
Disclaimer: The health risks mentioned above are precautionary recommendations based on current AQI levels. While you may not experience immediate effects, prolonged exposure to air pollution can lead to these health issues over time. This is not medical advice. Please consult a clinician if you experience severe, unusual, or worsening symptoms.
San Diego's Nearby Cities AQI
Explore nearby city AQI pages around San Diego.
Air Quality FAQs at San Diego, California
Frequently Asked Questions
About Air Quality
The current real-time AQI (US) level in San Diego, California is 59 (Moderate). This was last updated recently.
The best AQI (US) level was generally lower during the early afternoon in the last 24 hours.
The worst AQI (US) level typically peaks during early morning or late evening hours due to temperature inversion.
The AQI (US) levels in San Diego, California have been fluctuating throughout the last 24 hours depending on traffic and weather conditions.
Current AQI (US) levels are moderate for everyone. It's advised to adjust your outdoor activities based on personal sensitivity.