Stay updated with real-time air quality in Santa Cruz, 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)
52
Moderate
Santa Cruz, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.44 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
46.21 μg/m³
0
55
155
255
425
605+
3.77 ppb
0
55
71
86
201
201+
0.51 ppb
0
36
76
186
605
1005+
3.35 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Santa Cruz, California
Santa Cruz, California
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AQI 44
Good
8.42μg/m³
PM2.5
37.50μg/m³
PM10
3.04ppb
O3
0.51ppb
SO2
3.27ppb
NO2
0.27ppm
CO
AQI 49
Good
9.09μg/m³
PM2.5
40.29μg/m³
PM10
3.21ppb
O3
0.51ppb
SO2
3.33ppb
NO2
0.27ppm
CO
AQI 62
Moderate
14.77μg/m³
PM2.5
65.05μg/m³
PM10
5.34ppb
O3
0.52ppb
SO2
3.55ppb
NO2
0.27ppm
CO
AQI 75
Moderate
21.83μg/m³
PM2.5
79.42μg/m³
PM10
3.77ppb
O3
0.50ppb
SO2
3.41ppb
NO2
0.27ppm
CO
AQI 71
Moderate
20.14μg/m³
PM2.5
83.84μg/m³
PM10
2.14ppb
O3
0.52ppb
SO2
7.04ppb
NO2
0.26ppm
CO
AQI 71
Moderate
19.80μg/m³
PM2.5
82.32μg/m³
PM10
2.50ppb
O3
0.52ppb
SO2
6.28ppb
NO2
0.26ppm
CO
Air quality and pollutant data for California, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Santa Cruz, California is updated every hour for accuracy.
In the past 24 hours, the air quality in Santa Cruz, California was at its worst at 03:00:00 on 2025-12-07.
In the last 24 hours, the best air quality in Santa Cruz, California was observed at 08:00:00 on 2025-12-06.
As of now, the AQI in Santa Cruz, California is 52, indicating Moderate conditions.
Santa Cruz, California air has the highest levels of PM2.5.
Poor air quality in Santa Cruz, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Santa Cruz, California are currently 10.435 μg/m3.
The PM10 concentration in Santa Cruz, California is 46.212 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Santa Cruz, California is 0.269 ppm.
Currently, Santa Cruz, California has a sulfur dioxide (SO2) concentration of 0.513 ppb.
The current ozone (O3) level in Santa Cruz, California at the moment is 3.765 ppm.
Nitrogen dioxide (NO2) level in Santa Cruz, California at the moment is 3.355 ppb.
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