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Air quality in San Mateo

Air quality index (AQI⁺) and PM2.5 air pollution in San Mateo • 18 Followers • 16:00, Oct 30 Local time

US AQI⁺

Good

Main pollutant:

PM2.5

1.4 µg/m³

28°

2 km/h

75 %

Hourly forecast

San Mateo air quality index (AQI⁺) forecast

Now

28°

km/h

75%

18:00

26°

km/h

77%

19:00

25°

km/h

80%

20:00

26°

km/h

81%

21:00

26°

km/h

81%

22:00

26°

km/h

81%

23:00

25°

km/h

82%

Sat

00:00

25°

km/h

83%

01:00

25°

km/h

83%

02:00

25°

km/h

83%

03:00

25°

km/h

83%

04:00

24°

km/h

84%

05:00

25°

km/h

84%

06:00

25°

km/h

84%

07:00

26°

km/h

79%

08:00

28°

km/h

71%

09:00

30°

km/h

61%

10:00

31°

km/h

52%

11:00

32°

km/h

46%

12:00

32°

km/h

45%

13:00

32°

km/h

46%

14:00

32°

km/h

46%

15:00

31°

km/h

48%

16:00

30°

km/h

51%

17:00

28°

km/h

56%

18:00

27°

km/h

60%

19:00

26°

km/h

64%

20:00

26°

km/h

67%

21:00

26°

km/h

69%

22:00

25°

km/h

71%

23:00

25°

km/h

72%

Sun

00:00

26°

km/h

73%

01:00

26°

km/h

73%

02:00

26°

km/h

74%

03:00

25°

km/h

76%

04:00

25°

km/h

76%

05:00

25°

km/h

76%

06:00

25°

km/h

77%

07:00

26°

km/h

74%

08:00

27°

km/h

71%

09:00

29°

km/h

65%

10:00

31°

km/h

58%

11:00

32°

km/h

54%

12:00

32°

km/h

55%

13:00

32°

km/h

61%

14:00

31°

km/h

66%

15:00

31°

km/h

61%

16:00

31°

km/h

59%

17:00

29°

km/h

60%

18:00

28°

km/h

64%

19:00

27°

km/h

69%

20:00

26°

km/h

70%

21:00

26°

km/h

71%

22:00

26°

km/h

72%

23:00

26°

km/h

73%

Mon

00:00

25°

km/h

75%

01:00

25°

km/h

76%

02:00

25°

km/h

77%

03:00

25°

km/h

78%

04:00

25°

km/h

79%

05:00

25°

km/h

80%

06:00

25°

km/h

79%

07:00

26°

km/h

75%

08:00

28°

km/h

69%

09:00

30°

km/h

62%

10:00

31°

km/h

57%

11:00

32°

km/h

52%

12:00

33°

km/h

50%

13:00

32°

km/h

53%

14:00

31°

km/h

58%

15:00

31°

km/h

52%

16:00

31°

km/h

52%

Daily forecast

San Mateo air quality index (AQI⁺) forecast

Today

32°

25°

km/h

70%

Sat

32°

25°

km/h

60%

Sun

32°

25°

km/h

65%

Air pollutants

What is the current air quality in San Mateo?

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

Real-time San Mateo 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

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Medical grade air purifiers

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Powerful, stylish air purifiers

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Health recommendations

Enjoy outdoor activities

Open your windows to bring clean, fresh air indoors

Get a monitor

Real-time San Mateo air pollution map

Protect yourself from air pollution in San Mateo

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

Worldwide AQI⁺ ranking

Station ranking

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

#	Stations	AQI⁺ US
1	Tivoli	57

City ranking

Real-time Philippines AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Valenzuela, National Capital Region	100
2	Caloocan, National Capital Region	72
3	Makati, National Capital Region	63
4	Mandaluyong, National Capital Region	63
5	Port Area, National Capital Region	62
6	Pasig City, National Capital Region	60
7	Pasay, National Capital Region	54
8	Pasig, National Capital Region	52
9	Las Pinas, National Capital Region	49
10	Paranaque, National Capital Region	48

History

Historic air quality graph for San Mateo

8 AQI⁺ US

Good

15:00–16:00 Oct 30 Local time

AQI⁺ US

History

Historic air quality graph for San Mateo

8 AQI⁺ US

Good

15:00–16:00 Oct 30 Local time

AQI⁺ US

Most polluted locations near San Mateo

Worldwide AQI⁺ ranking

Station ranking

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

#	Stations	AQI⁺ US
1	Tivoli	57

City ranking

Real-time Philippines AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Valenzuela, National Capital Region	100
2	Caloocan, National Capital Region	72
3	Makati, National Capital Region	63
4	Mandaluyong, National Capital Region	63
5	Port Area, National Capital Region	62
6	Pasig City, National Capital Region	60
7	Pasay, National Capital Region	54
8	Pasig, National Capital Region	52
9	Las Pinas, National Capital Region	49
10	Paranaque, National Capital Region	48