World

San Francisco

Add

Air quality in San Francisco

Air quality index (AQI⁺) and PM2.5 air pollution in San Francisco • 1.1M Followers • 05:00, Sep 20 Local time

US AQI⁺

Good

Main pollutant:

O₃

46 µg/m³

14°

13 km/h

97 %

Hourly forecast

San Francisco air quality index (AQI⁺) forecast

Now

14°

km/h

97%

06:00

30%

14°

km/h

98%

07:00

80%

14°

km/h

98%

08:00

80%

14°

km/h

97%

09:00

14°

km/h

97%

10:00

80%

14°

km/h

96%

11:00

80%

15°

km/h

95%

12:00

15°

km/h

95%

13:00

80%

16°

km/h

95%

14:00

80%

15°

km/h

95%

15:00

15°

km/h

96%

16:00

80%

15°

km/h

96%

17:00

80%

15°

km/h

96%

18:00

15°

km/h

97%

19:00

80%

14°

km/h

98%

20:00

80%

14°

km/h

98%

21:00

14°

km/h

98%

22:00

80%

14°

km/h

98%

23:00

80%

14°

km/h

98%

Mon

00:00

14°

km/h

98%

01:00

80%

14°

km/h

98%

02:00

80%

14°

km/h

98%

03:00

14°

km/h

98%

04:00

80%

13°

km/h

98%

05:00

80%

14°

km/h

98%

06:00

13°

km/h

98%

07:00

80%

13°

km/h

98%

08:00

80%

13°

km/h

98%

09:00

14°

km/h

97%

10:00

14°

km/h

96%

11:00

15°

km/h

95%

12:00

16°

km/h

94%

13:00

16°

km/h

94%

14:00

70%

16°

km/h

95%

15:00

16°

km/h

96%

16:00

80%

15°

km/h

96%

17:00

80%

15°

km/h

97%

18:00

15°

km/h

97%

19:00

80%

14°

km/h

98%

20:00

80%

14°

km/h

98%

21:00

14°

km/h

98%

22:00

80%

14°

km/h

98%

23:00

80%

14°

km/h

98%

Tue

00:00

13°

km/h

98%

01:00

80%

13°

km/h

98%

02:00

80%

13°

km/h

98%

03:00

13°

km/h

98%

04:00

13°

km/h

98%

05:00

13°

km/h

98%

06:00

15°

km/h

88%

07:00

15°

km/h

88%

08:00

15°

km/h

86%

09:00

16°

km/h

81%

10:00

17°

km/h

74%

11:00

18°

km/h

67%

12:00

19°

km/h

64%

13:00

20°

km/h

66%

14:00

20°

km/h

66%

15:00

19°

km/h

68%

16:00

19°

km/h

72%

17:00

18°

km/h

75%

18:00

17°

km/h

81%

19:00

16°

km/h

84%

20:00

16°

km/h

86%

21:00

16°

km/h

84%

22:00

16°

km/h

83%

23:00

16°

km/h

84%

Wed

00:00

16°

km/h

84%

01:00

16°

km/h

84%

02:00

16°

km/h

85%

03:00

15°

km/h

84%

04:00

15°

km/h

84%

Daily forecast

San Francisco air quality index (AQI⁺) forecast

Today

80%

16°

14°

km/h

97%

Mon

80%

16°

13°

km/h

97%

Tue

20°

15°

km/h

77%

Air pollutants

What is the current air quality in San Francisco?

PM2.5 concentration currently meets the WHO annual PM2.5 guideline.

Real-time San Francisco air pollution map

Health recommendations

Enjoy outdoor activities

Open your windows to bring clean, fresh air indoors

Get a monitor

Protect yourself from air pollution in San Francisco

SHOP IQAIR PRODUCTS

Monitor the air you breathe

Get accurate AirVisual air quality readings and real-time insights for cleaner air. Monitors that reveal pollution sources, highlight when air purifier use is needed.

AirVisual Series

Medical grade air purifiers

Trusted worldwide, the HealthPro Series uses HyperHEPA technology. Filters ultrafine particles other air purifiers miss, delivering medical-grade protection.

HealthPro Series

Powerful, stylish air purifiers

Compact and powerful, the Atem Series combines Swiss engineering with high-performance air purification, filtering ultrafine particles with HyperHEPA technology.

Atem Series

Pollen

What is the pollen count in San Francisco today?

Index

Moderate

Tree

None

Grass

None

Weed

Moderate

50%

Source:

wetter.com

Pollen forecast in San Francisco

Health recommendations

Enjoy outdoor activities

Open your windows to bring clean, fresh air indoors

Get a monitor

Real-time San Francisco air pollution map

Pollen

What is the pollen count in San Francisco today?

Index

Moderate

Tree

None

Grass

None

Weed

Moderate

50%

Source:

wetter.com

Pollen forecast in San Francisco

Protect yourself from air pollution in San Francisco

SHOP IQAIR PRODUCTS

Monitor the air you breathe

Get accurate AirVisual air quality readings and real-time insights for cleaner air. Monitors that reveal pollution sources, highlight when air purifier use is needed.

AirVisual Series

Medical grade air purifiers

Trusted worldwide, the HealthPro Series uses HyperHEPA technology. Filters ultrafine particles other air purifiers miss, delivering medical-grade protection.

HealthPro Series

Powerful, stylish air purifiers

Compact and powerful, the Atem Series combines Swiss engineering with high-performance air purification, filtering ultrafine particles with HyperHEPA technology.

Atem Series

Most polluted locations near San Francisco

Worldwide AQI⁺ ranking

Station ranking

Real-time AQI⁺ station ranking for stations in San Francisco

#	Stations	AQI⁺ US
1	100-200 Colby St	27
2	100-200 Maynard St	24
3	1377 29th Ave	24
4	1333 Jones St.	23
5	1108-1126 Cabrillo St	22
6	1034-1064 14th St	19
7	100 Block Andover	18
8	12th Ave	16
9	116 Marietta Drive	12
10	10th and Fulton Deck	4

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Sparta, Ohio	87
2	Ontario, California	86
3	Calexico, California	84
4	Avenal, California	79
5	Medina, Ohio	74
6	Bowling Green, Ohio	72
7	Memphis, Tennessee	72
8	Beaumont, California	71
9	Sangamon County, Illinois	71
10	Canton, Ohio	69

History

Historic air quality graph for San Francisco

17 AQI⁺ US

Good

04:00–05:00 Sep 20 Local time

AQI⁺ US

History

Historic air quality graph for San Francisco

17 AQI⁺ US

Good

04:00–05:00 Sep 20 Local time

AQI⁺ US

Most polluted locations near San Francisco

Worldwide AQI⁺ ranking

Station ranking

Real-time AQI⁺ station ranking for stations in San Francisco

#	Stations	AQI⁺ US
1	100-200 Colby St	27
2	100-200 Maynard St	24
3	1377 29th Ave	24
4	1333 Jones St.	23
5	1108-1126 Cabrillo St	22
6	1034-1064 14th St	19
7	100 Block Andover	18
8	12th Ave	16
9	116 Marietta Drive	12
10	10th and Fulton Deck	4

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Sparta, Ohio	87
2	Ontario, California	86
3	Calexico, California	84
4	Avenal, California	79
5	Medina, Ohio	74
6	Bowling Green, Ohio	72
7	Memphis, Tennessee	72
8	Beaumont, California	71
9	Sangamon County, Illinois	71
10	Canton, Ohio	69