Stay updated with real-time air quality in Grand Terrace, 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)
61
Moderate
Grand Terrace, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.62 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
32.26 μg/m³
0
55
155
255
425
605+
57.59 ppb
0
55
71
86
201
201+
0.72 ppb
0
36
76
186
605
1005+
4.92 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Grand Terrace, California
Grand Terrace, California
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AQI 64
Moderate
7.32μg/m³
PM2.5
31.58μg/m³
PM10
58.72ppb
O3
0.76ppb
SO2
5.56ppb
NO2
0.26ppm
CO
AQI 64
Moderate
7.17μg/m³
PM2.5
31.22μg/m³
PM10
59.29ppb
O3
0.78ppb
SO2
5.86ppb
NO2
0.26ppm
CO
AQI 50
Good
8.10μg/m³
PM2.5
34.42μg/m³
PM10
54.15ppb
O3
0.63ppb
SO2
3.85ppb
NO2
0.27ppm
CO
AQI 67
Moderate
6.92μg/m³
PM2.5
30.97μg/m³
PM10
59.97ppb
O3
0.82ppb
SO2
6.52ppb
NO2
0.25ppm
CO
AQI 51
Moderate
8.62μg/m³
PM2.5
34.59μg/m³
PM10
55.16ppb
O3
0.61ppb
SO2
5.17ppb
NO2
0.27ppm
CO
AQI 67
Moderate
7.50μg/m³
PM2.5
27.68μg/m³
PM10
59.65ppb
O3
0.71ppb
SO2
5.23ppb
NO2
0.26ppm
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 Grand Terrace, California is updated every hour.
The worst air quality in Grand Terrace, California in the last 24 hours was observed at 12:00:00 on 2026-06-13.
In the last 24 hrs, the best air quality in Grand Terrace, California was observed at 10:00:00 on 2026-06-13.
The current air quality in Grand Terrace, California is 61, categorized as Moderate based on real-time data.
The most common pollutant in Grand Terrace, California is O3.
If the air quality in Grand Terrace, California is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Grand Terrace, California is 7.615 μg/m3.
The current PM10 concentration at Grand Terrace, California is 32.257 μg/m3.
The current carbon monoxide (CO) concentration at Grand Terrace, California is 0.261 ppm.
The current sulfur dioxide (SO2) concentration at Grand Terrace, California is 0.716 ppb.
The current ozone (O3) concentration at Grand Terrace, California is 57.588 ppm.
The current nitrogen dioxide (NO2) concentration at Grand Terrace, California is 4.915 ppb.
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