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San Jose, California, United States
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Saint James Square Historic District, United States
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Air Quality in San Jose, California, United States

Pollutants in San Jose, United States

PM10
0.21 μg/ft3
PM25
0.16 μg/ft3
NO2
1.38 ppb
SO2
0.19 ppb
CO
0.13 ppb
O3
Primary Pollutant
54.81 ppb
Low riskHigh risk

Pollen Index in San Jose, United States

Tree
1/5
012345
Weed
0/5
012345
Grass
2/5
012345

Air Quality Forecast in San Jose, United States

Mon, May 23
MorningNoonEveningNight
Next day
Next day
AQI

On average, the air quality on this day will be moderate, meaning that air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. According to our index, ranging from 0 to 500, the air quality is going to be between values of 42 and 141.

On average, the air quality on this day will be moderate, meaning that air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. According to our index, ranging from 0 to 500, the air quality is going to be between values of 38 and 87.

AQI82
AQI137
AQI49
AQI39
Next day
Pollen

Tree pollen on this day is expected to have very high risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have very low risk.

Tree pollen on this day is expected to have medium risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have very low risk.

Tree

5
4
3
1

Weed

0
0
0
0

Grass

0
1
1
1
Next day
PM10
0.37 μg/ft3
0.38 μg/ft3
0.40 μg/ft3
0.40 μg/ft3
PM25
0.25 μg/ft3
0.24 μg/ft3
0.25 μg/ft3
0.25 μg/ft3
NO2
1.85 ppb
2.47 ppb
10.89 ppb
5.26 ppb
SO2
0.73 ppb
0.68 ppb
0.78 ppb
0.73 ppb
CO
0.14 ppb
0.15 ppb
0.19 ppb
0.18 ppb
O3
71.92 ppb
79.66 ppb
44.77 ppb
44.12 ppb
AQI

On average, the air quality on this day will be moderate, meaning that air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. According to our index, ranging from 0 to 500, the air quality is going to be between values of 38 and 87.

AQI39
AQI78
AQI75
AQI38
Pollen

Tree pollen on this day is expected to have medium risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have very low risk.

Tree

1
3
1
0

Weed

0
0
0
0

Grass

1
1
1
1
PM10
0.40 μg/ft3
0.49 μg/ft3
0.44 μg/ft3
0.43 μg/ft3
PM25
0.25 μg/ft3
0.29 μg/ft3
0.25 μg/ft3
0.26 μg/ft3
NO2
5.26 ppb
1.51 ppb
2.52 ppb
7.59 ppb
SO2
0.73 ppb
0.49 ppb
0.3 ppb
0.29 ppb
CO
0.18 ppb
0.14 ppb
0.12 ppb
0.15 ppb
O3
44.12 ppb
67.33 ppb
55.1 ppb
33.93 ppb
AQI

On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 24 and 40.

AQI35
AQI37
AQI39
AQI24
Pollen

Tree pollen on this day is expected to have very high risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have very low risk.

Tree

0
4
3
3

Weed

0
0
0
0

Grass

0
0
1
1
PM10
0.33 μg/ft3
0.26 μg/ft3
0.20 μg/ft3
0.20 μg/ft3
PM25
0.22 μg/ft3
0.16 μg/ft3
0.12 μg/ft3
0.12 μg/ft3
NO2
2.64 ppb
1.41 ppb
1.94 ppb
5.24 ppb
SO2
0.18 ppb
0.26 ppb
0.34 ppb
0.14 ppb
CO
0.12 ppb
0.1 ppb
0.09 ppb
0.1 ppb
O3
35.22 ppb
43.07 ppb
37.59 ppb
23.12 ppb

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