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Air quality in San Mateo County

Air quality index (AQI⁺) and PM2.5 air pollution in San Mateo County • 15 Followers • 08:00, Jun 05 Local time

US AQI⁺

Good

Main pollutant:

PM2.5

3.9 µg/m³

13°

1 km/h

87 %

Hourly forecast

San Mateo County air quality index (AQI⁺) forecast

Now

13°

km/h

87%

09:00

14°

km/h

83%

10:00

15°

km/h

80%

11:00

16°

km/h

77%

12:00

16°

km/h

75%

13:00

17°

km/h

73%

14:00

17°

km/h

71%

15:00

16°

km/h

68%

16:00

90%

14°

km/h

73%

17:00

90%

13°

km/h

77%

18:00

12°

km/h

84%

19:00

90%

11°

km/h

94%

20:00

90%

10°

km/h

96%

21:00

10°

km/h

97%

22:00

90%

10°

km/h

97%

23:00

90%

10°

km/h

98%

Sat

00:00

10°

km/h

98%

01:00

90%

10°

km/h

98%

02:00

90%

9°

km/h

98%

03:00

9°

km/h

99%

04:00

90%

9°

km/h

99%

05:00

90%

9°

km/h

99%

06:00

9°

km/h

99%

07:00

90%

9°

km/h

99%

08:00

90%

9°

km/h

99%

09:00

9°

km/h

99%

10:00

90%

10°

km/h

99%

11:00

90%

10°

km/h

99%

12:00

10°

km/h

99%

13:00

90%

10°

km/h

99%

14:00

90%

10°

km/h

99%

15:00

10°

km/h

99%

16:00

90%

10°

km/h

99%

17:00

90%

10°

km/h

99%

18:00

13°

km/h

64%

19:00

12°

km/h

71%

20:00

11°

km/h

79%

21:00

10°

km/h

83%

22:00

10°

km/h

88%

23:00

10°

km/h

90%

Sun

00:00

9°

km/h

92%

01:00

9°

km/h

94%

02:00

9°

km/h

94%

03:00

9°

km/h

95%

04:00

8°

km/h

95%

05:00

8°

km/h

96%

06:00

8°

km/h

95%

07:00

10°

km/h

88%

08:00

13°

km/h

64%

09:00

16°

km/h

48%

10:00

18°

km/h

39%

11:00

20°

km/h

34%

12:00

20°

km/h

33%

13:00

20°

km/h

35%

14:00

19°

km/h

42%

15:00

17°

km/h

53%

16:00

15°

km/h

60%

17:00

15°

km/h

56%

18:00

14°

km/h

60%

19:00

13°

km/h

64%

20:00

12°

km/h

72%

21:00

11°

km/h

79%

22:00

11°

km/h

79%

23:00

11°

km/h

79%

Mon

00:00

10°

km/h

83%

01:00

10°

km/h

86%

02:00

10°

km/h

89%

03:00

10°

km/h

90%

04:00

10°

km/h

91%

05:00

10°

km/h

93%

06:00

11°

km/h

92%

07:00

12°

km/h

87%

Daily forecast

San Mateo County air quality index (AQI⁺) forecast

Today

17°

10°

km/h

83%

Sat

90%

13°

9°

km/h

92%

Sun

20°

8°

km/h

59%

Air pollutants

What is the current air quality in San Mateo County?

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

Real-time San Mateo County 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 Mateo County

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 Mateo County today?

Index

Low

Tree

None

Grass

Low

25%

Weed

None

Source:

wetter.com

Pollen forecast in San Mateo County

Health recommendations

Enjoy outdoor activities

Open your windows to bring clean, fresh air indoors

Get a monitor

Real-time San Mateo County air pollution map

Pollen

What is the pollen count in San Mateo County today?

Index

Low

Tree

None

Grass

Low

25%

Weed

None

Source:

wetter.com

Pollen forecast in San Mateo County

Protect yourself from air pollution in San Mateo County

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 Mateo County

Worldwide AQI⁺ ranking

Station ranking

Real-time AQI⁺ station ranking for stations in San Mateo County

#	Stations	AQI⁺ US
1	Alberta Glen	34
2	Durham Road	27
3	265 Old Spanish Trail	21
4	Dirt Alpine	21
5	920 Bear Gulch Road	18
6	Alpine Road	18
7	Arlington Way	18
8	480 Tunitas Creek Road	14
9	Experimental Facilities Dept Shops EFD	13
10	Alexander Avenue	7

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	El Paso, Texas	155
2	Las Cruces, New Mexico	153
3	Burbank, Los Angeles County, California	88
4	Pasadena, California	86
5	Val Verde, California	85
6	Altadena, California	82
7	East Los Angeles, California	82
8	Pinal County, Arizona	82
9	South Pasadena, California	82
10	Inglewood, California	81

History

Historic air quality graph for San Mateo County

21 AQI⁺ US

Good

07:00–08:00 Jun 05 Local time

AQI⁺ US

History

Historic air quality graph for San Mateo County

21 AQI⁺ US

Good

07:00–08:00 Jun 05 Local time

AQI⁺ US

Most polluted locations near San Mateo County

Worldwide AQI⁺ ranking

Station ranking

Real-time AQI⁺ station ranking for stations in San Mateo County

#	Stations	AQI⁺ US
1	Alberta Glen	34
2	Durham Road	27
3	265 Old Spanish Trail	21
4	Dirt Alpine	21
5	920 Bear Gulch Road	18
6	Alpine Road	18
7	Arlington Way	18
8	480 Tunitas Creek Road	14
9	Experimental Facilities Dept Shops EFD	13
10	Alexander Avenue	7

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	El Paso, Texas	155
2	Las Cruces, New Mexico	153
3	Burbank, Los Angeles County, California	88
4	Pasadena, California	86
5	Val Verde, California	85
6	Altadena, California	82
7	East Los Angeles, California	82
8	Pinal County, Arizona	82
9	South Pasadena, California	82
10	Inglewood, California	81