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)
27
Good
Grand Terrace, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.71 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.11 μg/m³
0
55
155
255
425
605+
22.41 ppb
0
55
71
86
201
201+
0.22 ppb
0
36
76
186
605
1005+
8.77 ppb
0
54
101
361
1250
2050+
0.13 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 35
Good
6.03μg/m³
PM2.5
27.62μg/m³
PM10
38.29ppb
O3
0.26ppb
SO2
8.74ppb
NO2
0.12ppm
CO
AQI 36
Good
6.24μg/m³
PM2.5
28.65μg/m³
PM10
38.64ppb
O3
0.27ppb
SO2
8.95ppb
NO2
0.12ppm
CO
AQI 31
Good
3.65μg/m³
PM2.5
18.80μg/m³
PM10
33.72ppb
O3
0.18ppb
SO2
5.45ppb
NO2
0.18ppm
CO
AQI 34
Good
6.40μg/m³
PM2.5
29.00μg/m³
PM10
37.35ppb
O3
0.27ppb
SO2
9.80ppb
NO2
0.10ppm
CO
AQI 31
Good
4.85μg/m³
PM2.5
20.47μg/m³
PM10
33.09ppb
O3
0.28ppb
SO2
8.29ppb
NO2
0.17ppm
CO
AQI 38
Good
6.60μg/m³
PM2.5
28.14μg/m³
PM10
30.30ppb
O3
0.22ppb
SO2
7.58ppb
NO2
0.15ppm
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 2025-07-17.
In the last 24 hrs, the best air quality in Grand Terrace, California was observed at 02:00:00 on 2025-07-16.
The current air quality in Grand Terrace, California is 33, categorized as Good 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 5.408 μg/m3.
The current PM10 concentration at Grand Terrace, California is 24.813 μg/m3.
The current carbon monoxide (CO) concentration at Grand Terrace, California is 0.132 ppm.
The current sulfur dioxide (SO2) concentration at Grand Terrace, California is 0.256 ppb.
The current ozone (O3) concentration at Grand Terrace, California is 35.516 ppm.
The current nitrogen dioxide (NO2) concentration at Grand Terrace, California is 7.698 ppb.
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