Stay updated with real-time air quality in Santa Clara, California featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
38
Good
Santa Clara, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.94 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
30.39 μg/m³
0
55
155
255
425
605+
23.59 ppb
0
55
71
86
201
201+
0.38 ppb
0
36
76
186
605
1005+
5.88 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Santa Clara, California
Santa Clara, California
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AQI 44
Good
7.54μg/m³
PM2.5
32.76μg/m³
PM10
23.97ppb
O3
0.38ppb
SO2
6.67ppb
NO2
0.23ppm
CO
AQI 33
Good
6.30μg/m³
PM2.5
21.14μg/m³
PM10
22.21ppb
O3
0.36ppb
SO2
5.39ppb
NO2
0.28ppm
CO
AQI 33
Good
5.92μg/m³
PM2.5
26.68μg/m³
PM10
22.92ppb
O3
0.38ppb
SO2
4.67ppb
NO2
0.25ppm
CO
AQI 33
Good
5.54μg/m³
PM2.5
25.04μg/m³
PM10
22.74ppb
O3
0.37ppb
SO2
4.17ppb
NO2
0.26ppm
CO
AQI 38
Good
6.71μg/m³
PM2.5
29.09μg/m³
PM10
23.69ppb
O3
0.39ppb
SO2
6.28ppb
NO2
0.24ppm
CO
AQI 27
Good
4.98μg/m³
PM2.5
23.10μg/m³
PM10
22.39ppb
O3
0.37ppb
SO2
3.47ppb
NO2
0.26ppm
CO
The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Santa Clara, California are available every hour.
Santa Clara, California experienced its worst air quality at 10:00:00, 2026-07-27.
The best air quality in Santa Clara, California was observed at 06:00:00 on 2026-07-27.
The air quality in Santa Clara, California right now is Good, with an AQI of 38.
In Santa Clara, California, PM2.5 is the most frequently found pollutant.
When air quality in Santa Clara, California is compromised, staying indoors and wearing a mask can reduce health risks.
Santa Clara, California currently has a PM2.5 concentration of 6.939 μg/m3.
Santa Clara, California currently has a PM10 concentration of 30.389 μg/m3.
The current carbon monoxide (CO) level in Santa Clara, California is 0.233 ppm.
The current sulfur dioxide (SO2) concentration in Santa Clara, California is 0.38 ppb.
Santa Clara, California currently has an ozone (O3) concentration of 23.589 ppm.
The current level of nitrogen dioxide (NO2) in Santa Clara, California is 5.885 ppb.
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