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)
56
Moderate
Vallejo, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.91 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
54.00 μg/m³
0
55
155
255
425
605+
23.97 ppb
0
55
71
86
201
201+
0.40 ppb
0
36
76
186
605
1005+
3.52 ppb
0
54
101
361
1250
2050+
0.40 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Vallejo, California
Vallejo, California
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AQI 44
Good
8.06μg/m³
PM2.5
36.02μg/m³
PM10
25.95ppb
O3
0.32ppb
SO2
1.95ppb
NO2
0.47ppm
CO
AQI 49
Good
8.85μg/m³
PM2.5
39.79μg/m³
PM10
24.97ppb
O3
0.41ppb
SO2
2.60ppb
NO2
0.45ppm
CO
AQI 44
Good
8.37μg/m³
PM2.5
37.51μg/m³
PM10
25.98ppb
O3
0.33ppb
SO2
2.15ppb
NO2
0.45ppm
CO
AQI 49
Good
8.85μg/m³
PM2.5
39.79μg/m³
PM10
24.97ppb
O3
0.41ppb
SO2
2.60ppb
NO2
0.45ppm
CO
AQI 49
Good
9.15μg/m³
PM2.5
38.14μg/m³
PM10
23.94ppb
O3
0.36ppb
SO2
2.71ppb
NO2
0.37ppm
CO
AQI 49
Good
9.02μg/m³
PM2.5
40.57μg/m³
PM10
24.86ppb
O3
0.41ppb
SO2
2.73ppb
NO2
0.45ppm
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 2026-08-08.
In the last 24 hrs, the best air quality in Vallejo, California was observed at 04:00:00 on 2026-08-09.
The current air quality in Vallejo, California is 38, 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 7.417 μg/m3.
The current PM10 concentration at Vallejo, California is 33.094 μg/m3.
The current carbon monoxide (CO) concentration at Vallejo, California is 0.4 ppm.
The current sulfur dioxide (SO2) concentration at Vallejo, California is 0.301 ppb.
The current ozone (O3) concentration at Vallejo, California is 25.986 ppm.
The current nitrogen dioxide (NO2) concentration at Vallejo, California is 1.526 ppb.
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