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)
44
Good
Highland, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
8.36 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
32.58 μg/m³
0
55
155
255
425
605+
25.45 ppb
0
55
71
86
201
201+
0.23 ppb
0
36
76
186
605
1005+
13.78 ppb
0
54
101
361
1250
2050+
0.33 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Highland, California
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AQI 44
Good
7.79μg/m³
PM2.5
30.05μg/m³
PM10
32.42ppb
O3
0.23ppb
SO2
12.52ppb
NO2
0.36ppm
CO
AQI 49
Good
8.88μg/m³
PM2.5
39.50μg/m³
PM10
18.46ppb
O3
0.23ppb
SO2
15.21ppb
NO2
0.30ppm
CO
AQI 49
Good
9.48μg/m³
PM2.5
36.94μg/m³
PM10
23.25ppb
O3
0.22ppb
SO2
14.13ppb
NO2
0.33ppm
CO
AQI 54
Moderate
10.99μg/m³
PM2.5
37.28μg/m³
PM10
21.37ppb
O3
0.22ppb
SO2
14.67ppb
NO2
0.33ppm
CO
AQI 54
Moderate
11.11μg/m³
PM2.5
35.11μg/m³
PM10
22.96ppb
O3
0.25ppb
SO2
15.93ppb
NO2
0.36ppm
CO
AQI 60
Moderate
14.36μg/m³
PM2.5
40.40μg/m³
PM10
21.27ppb
O3
0.21ppb
SO2
14.37ppb
NO2
0.34ppm
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 12:00:00 on 2025-06-15.
In the last 24 hrs, the best air quality in Highland, California was observed at 02:00:00 on 2025-06-15.
The current air quality in Highland, California is 44, categorized as Good based on real-time data.
The most common pollutant in Highland, California is PM2.5.
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 8.363 μg/m3.
The current PM10 concentration at Highland, California is 32.579 μg/m3.
The current carbon monoxide (CO) concentration at Highland, California is 0.334 ppm.
The current sulfur dioxide (SO2) concentration at Highland, California is 0.234 ppb.
The current ozone (O3) concentration at Highland, California is 25.446 ppm.
The current nitrogen dioxide (NO2) concentration at Highland, California is 13.777 ppb.
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