Stay updated with real-time air quality in Watsonville, 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)
34
Good
Watsonville, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.30 μg/m³
0
55
155
255
425
605+
36.97 ppb
0
55
71
86
201
201+
0.54 ppb
0
36
76
186
605
1005+
1.90 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Watsonville, California
Watsonville, California
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AQI 28
Good
3.13μg/m³
PM2.5
12.40μg/m³
PM10
30.02ppb
O3
0.53ppb
SO2
2.08ppb
NO2
0.21ppm
CO
AQI 27
Good
3.79μg/m³
PM2.5
16.60μg/m³
PM10
28.63ppb
O3
0.55ppb
SO2
2.13ppb
NO2
0.28ppm
CO
AQI 34
Good
2.05μg/m³
PM2.5
8.47μg/m³
PM10
36.74ppb
O3
0.53ppb
SO2
2.12ppb
NO2
0.26ppm
CO
AQI 26
Good
3.89μg/m³
PM2.5
16.94μg/m³
PM10
28.10ppb
O3
0.55ppb
SO2
2.09ppb
NO2
0.28ppm
CO
AQI 28
Good
3.66μg/m³
PM2.5
15.96μg/m³
PM10
29.75ppb
O3
0.55ppb
SO2
2.24ppb
NO2
0.28ppm
CO
AQI 28
Good
2.19μg/m³
PM2.5
10.38μg/m³
PM10
29.76ppb
O3
0.54ppb
SO2
2.20ppb
NO2
0.25ppm
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 Watsonville, California is updated every hour for accuracy.
In the past 24 hours, the air quality in Watsonville, California was at its worst at 09:00:00 on 2026-05-03.
In the last 24 hours, the best air quality in Watsonville, California was observed at 02:00:00 on 2026-05-03.
As of now, the AQI in Watsonville, California is 34, indicating Good conditions.
Watsonville, California air has the highest levels of O3.
Poor air quality in Watsonville, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Watsonville, California are currently 3.395 μg/m3.
The PM10 concentration in Watsonville, California is 13.296 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Watsonville, California is 0.262 ppm.
Currently, Watsonville, California has a sulfur dioxide (SO2) concentration of 0.538 ppb.
The current ozone (O3) level in Watsonville, California at the moment is 36.971 ppm.
Nitrogen dioxide (NO2) level in Watsonville, California at the moment is 1.898 ppb.
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