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)
33
Good
Watsonville, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.59 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.93 μg/m³
0
55
155
255
425
605+
22.70 ppb
0
55
71
86
201
201+
0.79 ppb
0
36
76
186
605
1005+
3.12 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Watsonville, California
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AQI 22
Good
4.34μg/m³
PM2.5
18.95μg/m³
PM10
17.75ppb
O3
0.75ppb
SO2
3.68ppb
NO2
0.26ppm
CO
AQI 11
Good
2.10μg/m³
PM2.5
8.94μg/m³
PM10
7.78ppb
O3
0.75ppb
SO2
4.78ppb
NO2
0.56ppm
CO
AQI 11
Good
2.46μg/m³
PM2.5
9.82μg/m³
PM10
4.17ppb
O3
0.76ppb
SO2
6.88ppb
NO2
0.49ppm
CO
AQI 11
Good
2.10μg/m³
PM2.5
8.99μg/m³
PM10
7.13ppb
O3
0.75ppb
SO2
4.46ppb
NO2
0.56ppm
CO
AQI 11
Good
2.04μg/m³
PM2.5
8.65μg/m³
PM10
9.22ppb
O3
0.75ppb
SO2
5.30ppb
NO2
0.57ppm
CO
AQI 16
Good
2.91μg/m³
PM2.5
17.44μg/m³
PM10
12.82ppb
O3
0.75ppb
SO2
4.85ppb
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 03:00:00 on 2026-02-12.
In the last 24 hours, the best air quality in Watsonville, California was observed at 02:00:00 on 2026-02-12.
As of now, the AQI in Watsonville, California is 16, 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 3.112 μg/m3.
The PM10 concentration in Watsonville, California is 15.003 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Watsonville, California is 0.506 ppm.
Currently, Watsonville, California has a sulfur dioxide (SO2) concentration of 0.833 ppb.
The current ozone (O3) level in Watsonville, California at the moment is 7.45 ppm.
Nitrogen dioxide (NO2) level in Watsonville, California at the moment is 3.519 ppb.
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