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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 • 06:00, Jun 03 Local time

US AQI⁺

Good

Main pollutant:

PM2.5

3.2 µg/m³

9°

7 km/h

98 %

Hourly forecast

San Mateo County air quality index (AQI⁺) forecast

Now

9°

km/h

98%

07:00

90%

9°

km/h

98%

08:00

90%

10°

km/h

98%

09:00

11°

km/h

98%

10:00

90%

13°

km/h

84%

11:00

90%

14°

km/h

74%

12:00

15°

km/h

59%

13:00

90%

16°

km/h

55%

14:00

90%

16°

km/h

51%

15:00

15°

km/h

57%

16:00

14°

km/h

64%

17:00

14°

km/h

68%

18:00

14°

km/h

78%

19:00

13°

km/h

84%

20:00

12°

km/h

95%

21:00

11°

km/h

97%

22:00

90%

11°

km/h

97%

23:00

90%

11°

km/h

98%

Thu

00:00

10°

km/h

98%

01:00

90%

10°

km/h

98%

02:00

90%

10°

km/h

98%

03:00

10°

km/h

98%

04:00

11°

km/h

88%

05:00

11°

km/h

84%

06:00

11°

km/h

82%

07:00

12°

km/h

82%

08:00

13°

km/h

88%

09:00

15°

km/h

86%

10:00

16°

km/h

82%

11:00

16°

km/h

78%

12:00

16°

km/h

73%

13:00

16°

km/h

71%

14:00

16°

km/h

69%

15:00

16°

km/h

67%

16:00

90%

15°

km/h

65%

17:00

90%

15°

km/h

65%

18:00

14°

km/h

66%

19:00

90%

12°

km/h

72%

20:00

90%

11°

km/h

79%

21:00

11°

km/h

78%

22:00

90%

10°

km/h

82%

23:00

90%

9°

km/h

92%

Fri

00:00

9°

km/h

97%

01:00

90%

9°

km/h

97%

02:00

90%

9°

km/h

97%

03:00

9°

km/h

98%

04:00

90%

9°

km/h

98%

05:00

90%

8°

km/h

98%

06:00

9°

km/h

97%

07:00

11°

km/h

90%

08:00

13°

km/h

76%

09:00

16°

km/h

61%

10:00

18°

km/h

55%

11:00

19°

km/h

52%

12:00

20°

km/h

49%

13:00

21°

km/h

48%

14:00

20°

km/h

51%

15:00

19°

km/h

53%

16:00

17°

km/h

54%

17:00

17°

km/h

55%

18:00

16°

km/h

58%

19:00

14°

km/h

65%

20:00

13°

km/h

75%

21:00

11°

km/h

82%

22:00

11°

km/h

86%

23:00

11°

km/h

88%

Sat

00:00

11°

km/h

89%

01:00

11°

km/h

89%

02:00

10°

km/h

89%

03:00

10°

km/h

90%

04:00

10°

km/h

90%

05:00

10°

km/h

91%

Daily forecast

San Mateo County air quality index (AQI⁺) forecast

Today

90%

16°

9°

km/h

80%

Thu

16°

10°

km/h

76%

Fri

21°

9°

km/h

65%

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

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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.

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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

Moderate

Tree

Low

25%

Grass

Moderate

50%

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

Moderate

Tree

Low

25%

Grass

Moderate

50%

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	Arlington Way	28
2	Dirt Alpine	22
3	265 Old Spanish Trail	20
4	920 Bear Gulch Road	19
5	Alberta Glen	18
6	Experimental Facilities Dept Shops EFD	16
7	Alpine Road	14
8	Durham Road	14
9	480 Tunitas Creek Road	12
10	Alexander Avenue	4

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Murrieta, California	73
2	Maricopa County, Arizona	69
3	Calexico, California	68
4	East Los Angeles, California	68
5	Glendora, California	68
6	Claremont, California	67
7	Imperial, California	67
8	Carson, California	66
9	Diamond Bar, California	66
10	Palm Desert, California	66

History

Historic air quality graph for San Mateo County

17 AQI⁺ US

Good

05:00–06:00 Jun 03 Local time

AQI⁺ US

History

Historic air quality graph for San Mateo County

17 AQI⁺ US

Good

05:00–06:00 Jun 03 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	Arlington Way	28
2	Dirt Alpine	22
3	265 Old Spanish Trail	20
4	920 Bear Gulch Road	19
5	Alberta Glen	18
6	Experimental Facilities Dept Shops EFD	16
7	Alpine Road	14
8	Durham Road	14
9	480 Tunitas Creek Road	12
10	Alexander Avenue	4

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Murrieta, California	73
2	Maricopa County, Arizona	69
3	Calexico, California	68
4	East Los Angeles, California	68
5	Glendora, California	68
6	Claremont, California	67
7	Imperial, California	67
8	Carson, California	66
9	Diamond Bar, California	66
10	Palm Desert, California	66