San Francisco Air Quality Index (AQI) | Air Pollution
Real-time PM2.5, PM10 air pollution level in San Francisco
Last Updated: 2026-08-11 22:01 (Local Time)
15 °C
Partly Cloudy
Presently, San Francisco ranks for having the good air quality among cities worldwide.
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San Francisco
AQI (US) Trends - Annual Air Quality Changes
San Francisco, California, United States
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San Francisco
Health Advice For People Living In
San Francisco
0Cigarettes per day
Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.
Source:
Berkeley Earth
Solutions for Current AQI (US)
Prevent Health Problems: Understand Your Risks
San Francisco
Asthma
Heart Issues
Allergies
Sinus
Cold/Flu
Chronic (COPD)
Most Polluted Cities 2026
United States
Analyze the real-time most air polluted cities in the country.
Standard Value
1.
Colville, Washington
Unhealthy
5xabove Standard
2.
Omak, Washington
Poor
3xabove Standard
3.
Caguas, Puerto Rico
Poor
3xabove Standard
4.
Catano, Puerto Rico
Poor
3xabove Standard
5.
San Juan, Puerto Rico
Poor
3xabove Standard
6.
Airway Heights, Washington
Poor
3xabove Standard
7.
Nampa, Idaho
Poor
3xabove Standard
8.
Garden City, Idaho
Poor
3xabove Standard
9.
Boise, Idaho
Poor
3xabove Standard
10.
Helena Valley West Central, Montana
Poor
3xabove Standard
Last Updated: 12 Aug 2026, 05:15 AM
AQI City RankingsAir Quality Solutions For San Francisco
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at San Francisco
Frequently Asked Questions About Air Quality
1. What is the current AQI (US) level in San Francisco?
1. What is the current AQI (US) level in San Francisco?
The current real-time AQI (US) level in San Francisco is 42 (Good) due to recent rainfall by 0.03mm/hr. This was last updated 2026-08-11 22:01 (Local Time).
2. When was the best AQI (US) level in San Francisco in the last 24 hours?
2. When was the best AQI (US) level in San Francisco in the last 24 hours?
The best AQI (US) level was 40 (Good) at 8:01 AM, Aug 11, 2026 (Local Time) during the last 24 hours.
3. When was the worst AQI (US) level in San Francisco in the last 24 hours?
3. When was the worst AQI (US) level in San Francisco in the last 24 hours?
The worst AQI (US) level was 62 (Moderate) at 4:31 PM, Aug 11, 2026 (Local Time) during the last 24 hours.
4. What is the current trend of AQI (US) levels in San Francisco during last 24 hours?
4. What is the current trend of AQI (US) levels in San Francisco during last 24 hours?
The AQI (US) levels in San Francisco have been fluctuating throughout the last 24 hours. The levels have increased by highest 62 at 4:31 PM, Aug 11, 2026 (Local Time), lowest 40 at 8:01 AM, Aug 11, 2026 (Local Time).
5. What actions are recommended as per the current AQI (US) level in San Francisco?
5. What actions are recommended as per the current AQI (US) level in San Francisco?
The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.
Recent AQI Blogs
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