Stay updated with real-time air quality in Highland, 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
Highland, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
10.25 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
45.06 μg/m³
0
55
155
255
425
605+
63.07 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
10.08 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Highland, California
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AQI 33
Good
5.90μg/m³
PM2.5
28.26μg/m³
PM10
24.62ppb
O3
0.24ppb
SO2
9.32ppb
NO2
0.30ppm
CO
AQI 38
Good
7.16μg/m³
PM2.5
31.61μg/m³
PM10
17.09ppb
O3
0.24ppb
SO2
11.17ppb
NO2
0.30ppm
CO
AQI 38
Good
7.05μg/m³
PM2.5
29.75μg/m³
PM10
18.05ppb
O3
0.26ppb
SO2
11.48ppb
NO2
0.30ppm
CO
AQI 38
Good
7.43μg/m³
PM2.5
29.91μg/m³
PM10
16.77ppb
O3
0.27ppb
SO2
12.16ppb
NO2
0.30ppm
CO
AQI 38
Good
7.33μg/m³
PM2.5
26.14μg/m³
PM10
15.83ppb
O3
0.29ppb
SO2
14.32ppb
NO2
0.31ppm
CO
AQI 49
Good
8.63μg/m³
PM2.5
32.35μg/m³
PM10
14.21ppb
O3
0.28ppb
SO2
12.93ppb
NO2
0.29ppm
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 Highland, California is updated every hour.
The worst air quality in Highland, California in the last 24 hours was observed at 02:00:00 on 2025-09-06.
In the last 24 hrs, the best air quality in Highland, California was observed at 06:00:00 on 2025-09-05.
The current air quality in Highland, California is 77, categorized as Moderate based on real-time data.
The most common pollutant in Highland, California is O3.
If the air quality in Highland, California is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Highland, California is 10.246 μg/m3.
The current PM10 concentration at Highland, California is 45.056 μg/m3.
The current carbon monoxide (CO) concentration at Highland, California is 0.278 ppm.
The current sulfur dioxide (SO2) concentration at Highland, California is 0.275 ppb.
The current ozone (O3) concentration at Highland, California is 63.067 ppm.
The current nitrogen dioxide (NO2) concentration at Highland, California is 10.077 ppb.
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