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)
27
Good
Santa Cruz, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.49 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.86 μg/m³
0
55
155
255
425
605+
29.37 ppb
0
55
71
86
201
201+
0.49 ppb
0
36
76
186
605
1005+
3.24 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 Cruz, California
Santa Cruz, California
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AQI 27
Good
4.50μg/m³
PM2.5
20.00μg/m³
PM10
29.03ppb
O3
0.50ppb
SO2
3.21ppb
NO2
0.22ppm
CO
AQI 27
Good
4.52μg/m³
PM2.5
19.97μg/m³
PM10
29.21ppb
O3
0.50ppb
SO2
3.21ppb
NO2
0.22ppm
CO
AQI 28
Good
4.44μg/m³
PM2.5
19.38μg/m³
PM10
30.03ppb
O3
0.49ppb
SO2
3.29ppb
NO2
0.23ppm
CO
AQI 31
Good
4.12μg/m³
PM2.5
14.18μg/m³
PM10
32.77ppb
O3
0.53ppb
SO2
3.21ppb
NO2
0.22ppm
CO
AQI 34
Good
5.29μg/m³
PM2.5
18.02μg/m³
PM10
36.73ppb
O3
0.48ppb
SO2
3.55ppb
NO2
0.23ppm
CO
AQI 33
Good
5.52μg/m³
PM2.5
20.23μg/m³
PM10
35.93ppb
O3
0.47ppb
SO2
3.55ppb
NO2
0.23ppm
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 10:00:00 on 2026-06-24.
In the last 24 hours, the best air quality in Santa Cruz, California was observed at 02:00:00 on 2026-06-24.
As of now, the AQI in Santa Cruz, California is 27, indicating Good conditions.
Santa Cruz, California air has the highest levels of O3.
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 4.493 μg/m3.
The PM10 concentration in Santa Cruz, California is 19.855 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Santa Cruz, California is 0.225 ppm.
Currently, Santa Cruz, California has a sulfur dioxide (SO2) concentration of 0.495 ppb.
The current ozone (O3) level in Santa Cruz, California at the moment is 29.372 ppm.
Nitrogen dioxide (NO2) level in Santa Cruz, California at the moment is 3.243 ppb.
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