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

Good
Fine
Moderate
Poor
Very poor
Hazardous
12.14 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
48.95 μg/m³
0
55
155
255
425
605+
50.23 ppb
0
55
71
86
201
201+
1.03 ppb
0
36
76
186
605
1005+
8.77 ppb
0
54
101
361
1250
2050+
0.34 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Tustin, California
Tustin, California
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AQI 92
Moderate
15.62μg/m³
PM2.5
137.32μg/m³
PM10
60.69ppb
O3
0.80ppb
SO2
13.30ppb
NO2
0.32ppm
CO
AQI 59
Moderate
13.07μg/m³
PM2.5
72.11μg/m³
PM10
48.50ppb
O3
0.85ppb
SO2
8.35ppb
NO2
0.37ppm
CO
AQI 60
Moderate
13.45μg/m³
PM2.5
73.85μg/m³
PM10
49.54ppb
O3
0.85ppb
SO2
8.55ppb
NO2
0.36ppm
CO
AQI 62
Moderate
14.54μg/m³
PM2.5
71.97μg/m³
PM10
50.32ppb
O3
0.79ppb
SO2
18.62ppb
NO2
0.32ppm
CO
AQI 60
Moderate
13.09μg/m³
PM2.5
74.24μg/m³
PM10
47.66ppb
O3
0.86ppb
SO2
8.01ppb
NO2
0.37ppm
CO
AQI 60
Moderate
14.14μg/m³
PM2.5
52.78μg/m³
PM10
50.25ppb
O3
0.80ppb
SO2
16.66ppb
NO2
0.32ppm
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 05:00:00, 2026-07-23.
The best air quality in Tustin, California was observed at 02:00:00 on 2026-07-23.
The air quality in Tustin, California right now is Moderate, with an AQI of 56.
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 12.144 μg/m3.
Tustin, California currently has a PM10 concentration of 48.947 μg/m3.
The current carbon monoxide (CO) level in Tustin, California is 0.34 ppm.
The current sulfur dioxide (SO2) concentration in Tustin, California is 1.033 ppb.
Tustin, California currently has an ozone (O3) concentration of 50.228 ppm.
The current level of nitrogen dioxide (NO2) in Tustin, California is 8.767 ppb.
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