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)
56
Moderate
Grand Terrace, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
12.49 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
45.84 μg/m³
0
55
155
255
425
605+
37.66 ppb
0
55
71
86
201
201+
0.26 ppb
0
36
76
186
605
1005+
17.20 ppb
0
54
101
361
1250
2050+
0.35 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Grand Terrace, California
Grand Terrace, California
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AQI 54
Moderate
11.30μg/m³
PM2.5
43.43μg/m³
PM10
47.58ppb
O3
0.38ppb
SO2
13.63ppb
NO2
0.37ppm
CO
AQI 54
Moderate
11.16μg/m³
PM2.5
43.99μg/m³
PM10
47.83ppb
O3
0.38ppb
SO2
13.58ppb
NO2
0.37ppm
CO
AQI 58
Moderate
13.15μg/m³
PM2.5
37.39μg/m³
PM10
45.69ppb
O3
0.35ppb
SO2
12.09ppb
NO2
0.30ppm
CO
AQI 54
Moderate
11.14μg/m³
PM2.5
50.13μg/m³
PM10
48.00ppb
O3
0.38ppb
SO2
14.49ppb
NO2
0.40ppm
CO
AQI 58
Moderate
12.91μg/m³
PM2.5
39.03μg/m³
PM10
42.52ppb
O3
0.41ppb
SO2
15.88ppb
NO2
0.31ppm
CO
AQI 60
Moderate
13.58μg/m³
PM2.5
40.50μg/m³
PM10
32.10ppb
O3
0.36ppb
SO2
15.35ppb
NO2
0.33ppm
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 02:00:00 on 2025-09-06.
In the last 24 hrs, the best air quality in Grand Terrace, California was observed at 09:00:00 on 2025-09-05.
The current air quality in Grand Terrace, California is 56, categorized as Moderate based on real-time data.
The most common pollutant in Grand Terrace, California is PM2.5.
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 12.495 μg/m3.
The current PM10 concentration at Grand Terrace, California is 45.843 μg/m3.
The current carbon monoxide (CO) concentration at Grand Terrace, California is 0.351 ppm.
The current sulfur dioxide (SO2) concentration at Grand Terrace, California is 0.261 ppb.
The current ozone (O3) concentration at Grand Terrace, California is 37.664 ppm.
The current nitrogen dioxide (NO2) concentration at Grand Terrace, California is 17.198 ppb.
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