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)
25
Good
Santa Cruz, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.90 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.72 μg/m³
0
55
155
255
425
605+
26.68 ppb
0
55
71
86
201
201+
0.43 ppb
0
36
76
186
605
1005+
3.35 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Santa Cruz, California
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AQI 26
Good
2.99μg/m³
PM2.5
11.98μg/m³
PM10
27.93ppb
O3
0.43ppb
SO2
3.42ppb
NO2
0.20ppm
CO
AQI 25
Good
2.96μg/m³
PM2.5
11.91μg/m³
PM10
27.48ppb
O3
0.43ppb
SO2
3.45ppb
NO2
0.20ppm
CO
AQI 22
Good
2.71μg/m³
PM2.5
11.24μg/m³
PM10
24.04ppb
O3
0.42ppb
SO2
3.17ppb
NO2
0.20ppm
CO
AQI 22
Good
3.85μg/m³
PM2.5
16.30μg/m³
PM10
19.42ppb
O3
0.44ppb
SO2
2.97ppb
NO2
0.20ppm
CO
AQI 20
Good
2.29μg/m³
PM2.5
10.73μg/m³
PM10
22.12ppb
O3
0.43ppb
SO2
5.47ppb
NO2
0.20ppm
CO
AQI 20
Good
2.13μg/m³
PM2.5
9.87μg/m³
PM10
22.13ppb
O3
0.43ppb
SO2
5.34ppb
NO2
0.20ppm
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 2026-03-03.
In the last 24 hours, the best air quality in Santa Cruz, California was observed at 03:00:00 on 2026-03-03.
As of now, the AQI in Santa Cruz, California is 25, 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 2.896 μg/m3.
The PM10 concentration in Santa Cruz, California is 11.725 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Santa Cruz, California is 0.205 ppm.
Currently, Santa Cruz, California has a sulfur dioxide (SO2) concentration of 0.426 ppb.
The current ozone (O3) level in Santa Cruz, California at the moment is 26.675 ppm.
Nitrogen dioxide (NO2) level in Santa Cruz, California at the moment is 3.355 ppb.
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