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)
27
Good
Vallejo, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.00 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.01 μg/m³
0
55
155
255
425
605+
19.96 ppb
0
55
71
86
201
201+
0.31 ppb
0
36
76
186
605
1005+
0.91 ppb
0
54
101
361
1250
2050+
0.30 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Vallejo, California
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AQI 52
Moderate
10.45μg/m³
PM2.5
46.37μg/m³
PM10
24.20ppb
O3
0.77ppb
SO2
1.53ppb
NO2
0.29ppm
CO
AQI 56
Moderate
11.88μg/m³
PM2.5
52.95μg/m³
PM10
20.68ppb
O3
0.59ppb
SO2
1.20ppb
NO2
0.22ppm
CO
AQI 33
Good
6.49μg/m³
PM2.5
28.77μg/m³
PM10
26.38ppb
O3
0.78ppb
SO2
1.11ppb
NO2
0.30ppm
CO
AQI 56
Moderate
11.88μg/m³
PM2.5
52.95μg/m³
PM10
20.68ppb
O3
0.59ppb
SO2
1.20ppb
NO2
0.22ppm
CO
AQI 38
Good
6.68μg/m³
PM2.5
29.76μg/m³
PM10
26.54ppb
O3
0.65ppb
SO2
1.36ppb
NO2
0.30ppm
CO
AQI 56
Moderate
11.94μg/m³
PM2.5
53.19μg/m³
PM10
20.29ppb
O3
0.57ppb
SO2
1.22ppb
NO2
0.22ppm
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 12:00:00 on 2025-07-30.
In the last 24 hrs, the best air quality in Vallejo, California was observed at 03:00:00 on 2025-07-29.
The current air quality in Vallejo, California is 56, categorized as Moderate 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 11.609 μg/m3.
The current PM10 concentration at Vallejo, California is 51.592 μg/m3.
The current carbon monoxide (CO) concentration at Vallejo, California is 0.299 ppm.
The current sulfur dioxide (SO2) concentration at Vallejo, California is 0.798 ppb.
The current ozone (O3) concentration at Vallejo, California is 24.012 ppm.
The current nitrogen dioxide (NO2) concentration at Vallejo, California is 1.684 ppb.
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