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)
26
Good
Santa Cruz, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.53 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.64 μg/m³
0
55
155
255
425
605+
27.96 ppb
0
55
71
86
201
201+
0.67 ppb
0
36
76
186
605
1005+
9.13 ppb
0
54
101
361
1250
2050+
0.41 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 25
Good
2.81μg/m³
PM2.5
11.64μg/m³
PM10
26.95ppb
O3
0.67ppb
SO2
10.41ppb
NO2
0.45ppm
CO
AQI 25
Good
2.89μg/m³
PM2.5
12.02μg/m³
PM10
26.69ppb
O3
0.67ppb
SO2
10.52ppb
NO2
0.45ppm
CO
AQI 23
Good
3.40μg/m³
PM2.5
14.39μg/m³
PM10
25.18ppb
O3
0.67ppb
SO2
11.15ppb
NO2
0.45ppm
CO
AQI 24
Good
2.70μg/m³
PM2.5
7.34μg/m³
PM10
25.87ppb
O3
0.68ppb
SO2
9.57ppb
NO2
0.47ppm
CO
AQI 33
Good
5.99μg/m³
PM2.5
27.40μg/m³
PM10
19.75ppb
O3
0.68ppb
SO2
12.35ppb
NO2
0.49ppm
CO
AQI 38
Good
6.99μg/m³
PM2.5
31.72μg/m³
PM10
19.03ppb
O3
0.68ppb
SO2
12.81ppb
NO2
0.49ppm
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 2026-10-22.
In the last 24 hours, the best air quality in Santa Cruz, California was observed at 07:00:00 on 2026-10-22.
As of now, the AQI in Santa Cruz, California is 26, 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 2.534 μg/m3.
The PM10 concentration in Santa Cruz, California is 9.64 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Santa Cruz, California is 0.41 ppm.
Currently, Santa Cruz, California has a sulfur dioxide (SO2) concentration of 0.671 ppb.
The current ozone (O3) level in Santa Cruz, California at the moment is 27.956 ppm.
Nitrogen dioxide (NO2) level in Santa Cruz, California at the moment is 9.133 ppb.
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