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)
22
Good
Watsonville, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.19 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.32 μg/m³
0
55
155
255
425
605+
17.49 ppb
0
55
71
86
201
201+
0.46 ppb
0
36
76
186
605
1005+
2.93 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Watsonville, California
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AQI 33
Good
5.84μg/m³
PM2.5
25.64μg/m³
PM10
26.62ppb
O3
0.49ppb
SO2
2.85ppb
NO2
0.20ppm
CO
AQI 27
Good
4.68μg/m³
PM2.5
20.69μg/m³
PM10
13.63ppb
O3
0.47ppb
SO2
2.46ppb
NO2
0.20ppm
CO
AQI 24
Good
0.83μg/m³
PM2.5
3.99μg/m³
PM10
25.90ppb
O3
0.49ppb
SO2
3.05ppb
NO2
0.20ppm
CO
AQI 27
Good
4.95μg/m³
PM2.5
21.80μg/m³
PM10
13.08ppb
O3
0.47ppb
SO2
2.40ppb
NO2
0.20ppm
CO
AQI 22
Good
4.19μg/m³
PM2.5
18.43μg/m³
PM10
14.24ppb
O3
0.47ppb
SO2
2.54ppb
NO2
0.20ppm
CO
AQI 22
Good
3.46μg/m³
PM2.5
16.67μg/m³
PM10
23.76ppb
O3
0.48ppb
SO2
2.37ppb
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 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 2026-03-03.
In the last 24 hours, the best air quality in Watsonville, California was observed at 03:00:00 on 2026-03-03.
As of now, the AQI in Watsonville, California is 22, indicating Good conditions.
Watsonville, California air has the highest levels of PM2.5.
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 4.186 μg/m3.
The PM10 concentration in Watsonville, California is 9.325 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Watsonville, California is 0.202 ppm.
Currently, Watsonville, California has a sulfur dioxide (SO2) concentration of 0.462 ppb.
The current ozone (O3) level in Watsonville, California at the moment is 17.49 ppm.
Nitrogen dioxide (NO2) level in Watsonville, California at the moment is 2.933 ppb.
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