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

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.54 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.62 μg/m³
0
55
155
255
425
605+
27.49 ppb
0
55
71
86
201
201+
0.68 ppb
0
36
76
186
605
1005+
7.68 ppb
0
54
101
361
1250
2050+
0.42 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Watsonville, California
Watsonville, California
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AQI 30
Good
2.88μg/m³
PM2.5
11.95μg/m³
PM10
32.13ppb
O3
0.69ppb
SO2
8.04ppb
NO2
0.46ppm
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 31
Good
1.11μg/m³
PM2.5
4.34μg/m³
PM10
33.28ppb
O3
0.69ppb
SO2
9.68ppb
NO2
0.48ppm
CO
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 24
Good
3.04μg/m³
PM2.5
12.72μg/m³
PM10
26.34ppb
O3
0.67ppb
SO2
10.68ppb
NO2
0.45ppm
CO
AQI 24
Good
3.27μg/m³
PM2.5
15.26μg/m³
PM10
26.07ppb
O3
0.68ppb
SO2
9.48ppb
NO2
0.44ppm
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 06:00:00 on 2026-10-22.
In the last 24 hours, the best air quality in Watsonville, California was observed at 03:00:00 on 2026-10-22.
As of now, the AQI in Watsonville, California is 25, 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 2.542 μg/m3.
The PM10 concentration in Watsonville, California is 11.617 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Watsonville, California is 0.425 ppm.
Currently, Watsonville, California has a sulfur dioxide (SO2) concentration of 0.681 ppb.
The current ozone (O3) level in Watsonville, California at the moment is 27.492 ppm.
Nitrogen dioxide (NO2) level in Watsonville, California at the moment is 7.684 ppb.
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