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
2.78 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.90 μg/m³
0
55
155
255
425
605+
27.40 ppb
0
55
71
86
201
201+
0.55 ppb
0
36
76
186
605
1005+
4.23 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Watsonville, California
Watsonville, California
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AQI 44
Good
7.61μg/m³
PM2.5
33.31μg/m³
PM10
26.94ppb
O3
0.55ppb
SO2
4.11ppb
NO2
0.21ppm
CO
AQI 23
Good
4.41μg/m³
PM2.5
18.58μg/m³
PM10
25.40ppb
O3
0.51ppb
SO2
4.27ppb
NO2
0.24ppm
CO
AQI 81
Moderate
25.31μg/m³
PM2.5
110.24μg/m³
PM10
31.08ppb
O3
0.54ppb
SO2
4.18ppb
NO2
0.23ppm
CO
AQI 23
Good
3.92μg/m³
PM2.5
16.25μg/m³
PM10
25.05ppb
O3
0.51ppb
SO2
4.27ppb
NO2
0.24ppm
CO
AQI 27
Good
5.27μg/m³
PM2.5
22.59μg/m³
PM10
25.67ppb
O3
0.51ppb
SO2
4.29ppb
NO2
0.24ppm
CO
AQI 33
Good
5.68μg/m³
PM2.5
12.67μg/m³
PM10
26.22ppb
O3
0.53ppb
SO2
4.17ppb
NO2
0.23ppm
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 12:00:00 on 2026-06-23.
In the last 24 hours, the best air quality in Watsonville, California was observed at 07:00:00 on 2026-06-23.
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 2.784 μg/m3.
The PM10 concentration in Watsonville, California is 18.898 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Watsonville, California is 0.234 ppm.
Currently, Watsonville, California has a sulfur dioxide (SO2) concentration of 0.548 ppb.
The current ozone (O3) level in Watsonville, California at the moment is 27.403 ppm.
Nitrogen dioxide (NO2) level in Watsonville, California at the moment is 4.227 ppb.
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