Stay updated with real-time air quality in Vallejo, 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)
49
Good
Vallejo, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.72 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
38.67 μg/m³
0
55
155
255
425
605+
5.16 ppb
0
55
71
86
201
201+
0.31 ppb
0
36
76
186
605
1005+
13.13 ppb
0
54
101
361
1250
2050+
0.50 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Vallejo, California
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AQI 44
Good
8.16μg/m³
PM2.5
36.89μg/m³
PM10
6.98ppb
O3
0.45ppb
SO2
11.37ppb
NO2
0.47ppm
CO
AQI 38
Good
7.15μg/m³
PM2.5
31.32μg/m³
PM10
9.99ppb
O3
0.54ppb
SO2
8.18ppb
NO2
0.34ppm
CO
AQI 22
Good
4.20μg/m³
PM2.5
17.56μg/m³
PM10
11.47ppb
O3
0.94ppb
SO2
5.88ppb
NO2
0.45ppm
CO
AQI 38
Good
7.15μg/m³
PM2.5
31.32μg/m³
PM10
9.99ppb
O3
0.54ppb
SO2
8.18ppb
NO2
0.34ppm
CO
AQI 33
Good
5.71μg/m³
PM2.5
24.44μg/m³
PM10
9.82ppb
O3
0.79ppb
SO2
7.31ppb
NO2
0.43ppm
CO
AQI 38
Good
7.15μg/m³
PM2.5
31.28μg/m³
PM10
10.29ppb
O3
0.54ppb
SO2
7.92ppb
NO2
0.33ppm
CO
Air quality data and pollutant measurements for California, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Vallejo, California is updated every hour.
The worst air quality in Vallejo, California in the last 24 hours was observed at 06:00:00 on 2026-01-22.
In the last 24 hrs, the best air quality in Vallejo, California was observed at 07:00:00 on 2026-01-23.
The current air quality in Vallejo, California is 49, categorized as Good based on real-time data.
The most common pollutant in Vallejo, California is PM2.5.
If the air quality in Vallejo, California is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Vallejo, California is 8.723 μg/m3.
The current PM10 concentration at Vallejo, California is 38.673 μg/m3.
The current carbon monoxide (CO) concentration at Vallejo, California is 0.497 ppm.
The current sulfur dioxide (SO2) concentration at Vallejo, California is 0.313 ppb.
The current ozone (O3) concentration at Vallejo, California is 5.162 ppm.
The current nitrogen dioxide (NO2) concentration at Vallejo, California is 13.13 ppb.
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