WorldArrow icon
Arrow iconSan Mateo County

Air quality in San Mateo County

Air quality index (AQI⁺) and PM2.5 air pollution in San Mateo County • 20 Followers • 11:00, Sep 30

Roberto RodrigalioFresno EddyM. S.Anonymous contributor

25

US AQI⁺

Good

face expression based on aqi value

Main pollutant:

PM2.5

4.6 µg/m³

weather condition icon

23°

wind direction icon

3 km/h

weather humid icon

47 %

Roberto RodrigalioFresno EddyM. S.Anonymous contributor

Hourly forecast

San Mateo County air quality index (AQI⁺) forecast

Now

25

Weather icon

23°

IQAir AirVisual Air Quality Map Wind rotating 28 degree

3

km/h

Humidity icon

47%

12:00

25

Weather icon

24°

IQAir AirVisual Air Quality Map Wind rotating 346 degree

4

km/h

Humidity icon

44%

13:00

25

Weather icon

25°

IQAir AirVisual Air Quality Map Wind rotating 328 degree

4

km/h

Humidity icon

46%

14:00

25

Weather icon

25°

IQAir AirVisual Air Quality Map Wind rotating 326 degree

3

km/h

Humidity icon

46%

15:00

25

Weather icon

25°

IQAir AirVisual Air Quality Map Wind rotating 305 degree

3

km/h

Humidity icon

47%

16:00

25

Weather icon

24°

IQAir AirVisual Air Quality Map Wind rotating 264 degree

3

km/h

Humidity icon

51%

17:00

25

Weather icon

23°

IQAir AirVisual Air Quality Map Wind rotating 213 degree

3

km/h

Humidity icon

53%

18:00

24

Weather icon

21°

IQAir AirVisual Air Quality Map Wind rotating 200 degree

3

km/h

Humidity icon

57%

19:00

25

Weather icon

19°

IQAir AirVisual Air Quality Map Wind rotating 169 degree

3

km/h

Humidity icon

59%

20:00

26

Weather icon

19°

IQAir AirVisual Air Quality Map Wind rotating 172 degree

3

km/h

Humidity icon

61%

21:00

26

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 184 degree

4

km/h

Humidity icon

64%

22:00

27

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 168 degree

4

km/h

Humidity icon

64%

23:00

28

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 151 degree

4

km/h

Humidity icon

59%

Thu

00:00

29

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 159 degree

4

km/h

Humidity icon

57%

01:00

30

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 173 degree

4

km/h

Humidity icon

58%

02:00

31

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 155 degree

4

km/h

Humidity icon

55%

03:00

30

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 148 degree

4

km/h

Humidity icon

53%

04:00

29

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 153 degree

4

km/h

Humidity icon

51%

05:00

29

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 153 degree

4

km/h

Humidity icon

51%

06:00

31

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 152 degree

4

km/h

Humidity icon

50%

07:00

33

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 155 degree

4

km/h

Humidity icon

51%

08:00

36

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 167 degree

4

km/h

Humidity icon

51%

09:00

34

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 168 degree

4

km/h

Humidity icon

58%

10:00

32

Weather icon

20°

IQAir AirVisual Air Quality Map Wind rotating 187 degree

4

km/h

Humidity icon

57%

11:00

31

Weather icon

22°

IQAir AirVisual Air Quality Map Wind rotating 186 degree

2

km/h

Humidity icon

53%

12:00

31

Weather icon

24°

IQAir AirVisual Air Quality Map Wind rotating 191 degree

1

km/h

Humidity icon

50%

13:00

31

Weather icon

25°

IQAir AirVisual Air Quality Map Wind rotating 234 degree

1

km/h

Humidity icon

49%

14:00

31

Weather icon

24°

IQAir AirVisual Air Quality Map Wind rotating 238 degree

4

km/h

Humidity icon

51%

15:00

29

Weather icon

23°

IQAir AirVisual Air Quality Map Wind rotating 208 degree

6

km/h

Humidity icon

50%

16:00

27

Weather icon

23°

IQAir AirVisual Air Quality Map Wind rotating 194 degree

6

km/h

Humidity icon

49%

17:00

26

Weather icon

23°

IQAir AirVisual Air Quality Map Wind rotating 177 degree

6

km/h

Humidity icon

49%

18:00

26

Weather icon

21°

IQAir AirVisual Air Quality Map Wind rotating 180 degree

5

km/h

Humidity icon

53%

19:00

26

Weather icon

19°

IQAir AirVisual Air Quality Map Wind rotating 176 degree

6

km/h

Humidity icon

55%

20:00

26

Weather icon

19°

IQAir AirVisual Air Quality Map Wind rotating 173 degree

6

km/h

Humidity icon

54%

21:00

27

Weather icon

19°

IQAir AirVisual Air Quality Map Wind rotating 168 degree

6

km/h

Humidity icon

54%

22:00

28

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 175 degree

6

km/h

Humidity icon

56%

23:00

29

Weather icon

19°

IQAir AirVisual Air Quality Map Wind rotating 153 degree

5

km/h

Humidity icon

52%

Fri

00:00

30

Weather icon

19°

IQAir AirVisual Air Quality Map Wind rotating 162 degree

5

km/h

Humidity icon

49%

01:00

31

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 169 degree

5

km/h

Humidity icon

47%

02:00

33

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 161 degree

5

km/h

Humidity icon

43%

03:00

31

Weather icon

19°

IQAir AirVisual Air Quality Map Wind rotating 154 degree

5

km/h

Humidity icon

41%

04:00

29

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 174 degree

4

km/h

Humidity icon

42%

05:00

27

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 146 degree

4

km/h

Humidity icon

40%

06:00

29

Weather icon

19°

IQAir AirVisual Air Quality Map Wind rotating 152 degree

4

km/h

Humidity icon

35%

07:00

31

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 165 degree

4

km/h

Humidity icon

38%

08:00

33

Weather icon

20°

IQAir AirVisual Air Quality Map Wind rotating 146 degree

3

km/h

Humidity icon

35%

09:00

30

Weather icon

21°

IQAir AirVisual Air Quality Map Wind rotating 137 degree

2

km/h

Humidity icon

34%

10:00

28

Weather icon

22°

IQAir AirVisual Air Quality Map Wind rotating 148 degree

2

km/h

Humidity icon

39%

11:00

26

Weather icon

23°

IQAir AirVisual Air Quality Map Wind rotating 192 degree

2

km/h

Humidity icon

43%

12:00

28

Weather icon

25°

IQAir AirVisual Air Quality Map Wind rotating 261 degree

1

km/h

Humidity icon

45%

13:00

30

Weather icon

25°

IQAir AirVisual Air Quality Map Wind rotating 284 degree

3

km/h

Humidity icon

48%

14:00

33

Weather icon

24°

IQAir AirVisual Air Quality Map Wind rotating 240 degree

2

km/h

Humidity icon

51%

15:00

33

Weather icon

26°

IQAir AirVisual Air Quality Map Wind rotating 218 degree

1

km/h

Humidity icon

48%

16:00

33

Weather icon

25°

IQAir AirVisual Air Quality Map Wind rotating 241 degree

2

km/h

Humidity icon

46%

17:00

34

Weather icon

23°

IQAir AirVisual Air Quality Map Wind rotating 336 degree

1

km/h

Humidity icon

50%

18:00

34

Weather icon

21°

IQAir AirVisual Air Quality Map Wind rotating 249 degree

5

km/h

Humidity icon

47%

19:00

34

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 226 degree

3

km/h

Humidity icon

66%

20:00

35

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 218 degree

4

km/h

Humidity icon

67%

21:00

35

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 127 degree

4

km/h

Humidity icon

64%

22:00

35

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 145 degree

6

km/h

Humidity icon

56%

23:00

36

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 196 degree

3

km/h

Humidity icon

61%

Sat

00:00

35

Weather icon

16°

IQAir AirVisual Air Quality Map Wind rotating 197 degree

3

km/h

Humidity icon

64%

01:00

34

Weather icon

16°

IQAir AirVisual Air Quality Map Wind rotating 179 degree

3

km/h

Humidity icon

64%

02:00

33

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 129 degree

5

km/h

Humidity icon

61%

03:00

33

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 126 degree

4

km/h

Humidity icon

58%

04:00

33

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 90 degree

6

km/h

Humidity icon

55%

05:00

33

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 91 degree

6

km/h

Humidity icon

54%

06:00

35

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 93 degree

6

km/h

Humidity icon

53%

07:00

38

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 91 degree

4

km/h

Humidity icon

53%

08:00

41

Weather icon

19°

IQAir AirVisual Air Quality Map Wind rotating 95 degree

6

km/h

Humidity icon

48%

09:00

43

Weather icon

23°

IQAir AirVisual Air Quality Map Wind rotating 65 degree

5

km/h

Humidity icon

35%

10:00

45

Weather icon

27°

IQAir AirVisual Air Quality Map Wind rotating 24 degree

3

km/h

Humidity icon

27%

Daily forecast

|

San Mateo County air quality index (AQI⁺) forecast

Air pollutants

What is the current air quality in San Mateo County?

IQAir Check icon

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

air quality map

Real-time San Mateo County air pollution map

Health recommendations

Pollen

What is the pollen count in San Mateo County today?

Index

Pollen global icon

Moderate

Pollen tree icon

Tree

None

0%
Pollen grass icon

Grass

None

0%
Pollen weed icon

Weed

Moderate

50%

Source:

wetter.com
Pollen forecast in San Mateo County

Health recommendations

air quality map

Real-time San Mateo County air pollution map

Pollen

What is the pollen count in San Mateo County today?

Index

Pollen global icon

Moderate

Pollen tree icon

Tree

None

0%
Pollen grass icon

Grass

None

0%
Pollen weed icon

Weed

Moderate

50%

Source:

wetter.com
Pollen forecast in San Mateo County

Most polluted locations near San Mateo County

Worldwide AQI⁺ rankingArrow icon

Station ranking

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

#StationsAQI⁺ US
1
The national flag of USA

Belle Roche Court

37

2
The national flag of USA

Arlington Way

30

3
The national flag of USA

Burlingame Hills

29

4
The national flag of USA

920 Bear Gulch Road

27

5
The national flag of USA

265 Old Spanish Trail

26

6
The national flag of USA

Dirt Alpine

25

7
The national flag of USA

Alpine Road

21

8
The national flag of USA

Alexander Avenue

20

9
The national flag of USA

Bear Gulch Road

19

10
The national flag of USA

480 Tunitas Creek Road

7

City ranking

Real-time USA AQI⁺ city ranking

#CitiesAQI⁺ US
1
The national flag of USA

El Portal, California

146

2
The national flag of USA

Avenal, California

107

3
The national flag of USA

Mission, Texas

100

4
The national flag of USA

St. Louis, Missouri

91

5
The national flag of USA

Modesto, California

85

6
The national flag of USA

Sioux Falls, South Dakota

85

7
The national flag of USA

Falcon Heights, Minnesota

81

8
The national flag of USA

Cleveland, Ohio

80

9
The national flag of USA

Cameron Park, Texas

78

10
The national flag of USA

Fresno County, California

73

History

Historic air quality graph for San Mateo County

25 AQI⁺ US
Good
10:00–11:00 Sep 30 
AQI⁺ US

History

Historic air quality graph for San Mateo County

25 AQI⁺ US
Good
10:00–11:00 Sep 30 
AQI⁺ US

Most polluted locations near San Mateo County

Worldwide AQI⁺ rankingArrow icon

Station ranking

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

#StationsAQI⁺ US
1
The national flag of USA

Belle Roche Court

37

2
The national flag of USA

Arlington Way

30

3
The national flag of USA

Burlingame Hills

29

4
The national flag of USA

920 Bear Gulch Road

27

5
The national flag of USA

265 Old Spanish Trail

26

6
The national flag of USA

Dirt Alpine

25

7
The national flag of USA

Alpine Road

21

8
The national flag of USA

Alexander Avenue

20

9
The national flag of USA

Bear Gulch Road

19

10
The national flag of USA

480 Tunitas Creek Road

7

City ranking

Real-time USA AQI⁺ city ranking

#CitiesAQI⁺ US
1
The national flag of USA

El Portal, California

146

2
The national flag of USA

Avenal, California

107

3
The national flag of USA

Mission, Texas

100

4
The national flag of USA

St. Louis, Missouri

91

5
The national flag of USA

Modesto, California

85

6
The national flag of USA

Sioux Falls, South Dakota

85

7
The national flag of USA

Falcon Heights, Minnesota

81

8
The national flag of USA

Cleveland, Ohio

80

9
The national flag of USA

Cameron Park, Texas

78

10
The national flag of USA

Fresno County, California

73

Measure your own air quality

Get a monitor and contribute air quality data in your city.

Get a monitorHow to contribute
Flooded road.
external link icon

Indoor Air Quality Alert: Bangkok and Central Thailand flooding

Forest fire.
external link icon

Wildfire Map Spotlight: Dome Fire, Yosemite National Park, California

external link icon

Wildfire Map Spotlight: Timber and Plaskett Fires, California

Where is the cleanest air quality in San Mateo County?