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)
44
Good
Santa Cruz, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.24 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
37.32 μg/m³
0
55
155
255
425
605+
25.05 ppb
0
55
71
86
201
201+
0.47 ppb
0
36
76
186
605
1005+
1.61 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Santa Cruz, California
Santa Cruz, California
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AQI 44
Good
7.98μg/m³
PM2.5
34.90μg/m³
PM10
28.98ppb
O3
0.32ppb
SO2
2.52ppb
NO2
0.25ppm
CO
AQI 44
Good
7.86μg/m³
PM2.5
34.43μg/m³
PM10
28.84ppb
O3
0.32ppb
SO2
2.58ppb
NO2
0.25ppm
CO
AQI 38
Good
6.53μg/m³
PM2.5
28.81μg/m³
PM10
27.68ppb
O3
0.32ppb
SO2
2.90ppb
NO2
0.26ppm
CO
AQI 38
Good
7.38μg/m³
PM2.5
36.15μg/m³
PM10
23.26ppb
O3
0.32ppb
SO2
3.93ppb
NO2
0.24ppm
CO
AQI 44
Good
8.29μg/m³
PM2.5
36.76μg/m³
PM10
28.53ppb
O3
0.31ppb
SO2
5.10ppb
NO2
0.28ppm
CO
AQI 44
Good
7.92μg/m³
PM2.5
35.10μg/m³
PM10
29.12ppb
O3
0.31ppb
SO2
5.04ppb
NO2
0.28ppm
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 09:00:00 on 2026-05-01.
In the last 24 hours, the best air quality in Santa Cruz, California was observed at 08:00:00 on 2026-05-02.
As of now, the AQI in Santa Cruz, California is 44, indicating Good 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 8.242 μg/m3.
The PM10 concentration in Santa Cruz, California is 37.318 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Santa Cruz, California is 0.169 ppm.
Currently, Santa Cruz, California has a sulfur dioxide (SO2) concentration of 0.468 ppb.
The current ozone (O3) level in Santa Cruz, California at the moment is 25.048 ppm.
Nitrogen dioxide (NO2) level in Santa Cruz, California at the moment is 1.606 ppb.
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