Stay updated with real-time air quality in Tustin, 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)
77
Moderate
Tustin, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
22.60 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
40.38 μg/m³
0
55
155
255
425
605+
4.57 ppb
0
55
71
86
201
201+
0.66 ppb
0
36
76
186
605
1005+
20.62 ppb
0
54
101
361
1250
2050+
1.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Tustin, California
Tustin, California
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AQI 79
Moderate
23.96μg/m³
PM2.5
43.86μg/m³
PM10
5.91ppb
O3
0.63ppb
SO2
21.30ppb
NO2
1.17ppm
CO
AQI 79
Moderate
23.72μg/m³
PM2.5
42.36μg/m³
PM10
3.74ppb
O3
0.66ppb
SO2
20.71ppb
NO2
1.27ppm
CO
AQI 79
Moderate
24.24μg/m³
PM2.5
46.83μg/m³
PM10
3.74ppb
O3
0.66ppb
SO2
20.86ppb
NO2
1.26ppm
CO
AQI 77
Moderate
22.86μg/m³
PM2.5
24.94μg/m³
PM10
7.74ppb
O3
0.63ppb
SO2
21.51ppb
NO2
1.19ppm
CO
AQI 81
Moderate
24.68μg/m³
PM2.5
43.42μg/m³
PM10
3.25ppb
O3
0.66ppb
SO2
20.49ppb
NO2
1.28ppm
CO
AQI 75
Moderate
21.75μg/m³
PM2.5
26.64μg/m³
PM10
5.81ppb
O3
0.63ppb
SO2
20.72ppb
NO2
1.21ppm
CO
The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Tustin, California are available every hour.
Tustin, California experienced its worst air quality at 06:00:00, 2026-01-22.
The best air quality in Tustin, California was observed at 09:00:00 on 2026-01-23.
The air quality in Tustin, California right now is Moderate, with an AQI of 77.
In Tustin, California, PM2.5 is the most frequently found pollutant.
When air quality in Tustin, California is compromised, staying indoors and wearing a mask can reduce health risks.
Tustin, California currently has a PM2.5 concentration of 22.598 μg/m3.
Tustin, California currently has a PM10 concentration of 40.377 μg/m3.
The current carbon monoxide (CO) level in Tustin, California is 1.245 ppm.
The current sulfur dioxide (SO2) concentration in Tustin, California is 0.661 ppb.
Tustin, California currently has an ozone (O3) concentration of 4.568 ppm.
The current level of nitrogen dioxide (NO2) in Tustin, California is 20.619 ppb.
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