Stay updated with real-time air quality in Hillcrest, 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)
52
Moderate
Hillcrest, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.59 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
48.04 μg/m³
0
55
155
255
425
605+
45.80 ppb
0
55
71
86
201
201+
0.60 ppb
0
36
76
186
605
1005+
9.79 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Hillcrest, California
Hillcrest, California
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AQI 54
Moderate
10.60μg/m³
PM2.5
52.40μg/m³
PM10
47.74ppb
O3
0.72ppb
SO2
10.40ppb
NO2
0.19ppm
CO
AQI 54
Moderate
10.61μg/m³
PM2.5
56.69μg/m³
PM10
44.83ppb
O3
0.72ppb
SO2
14.30ppb
NO2
0.19ppm
CO
AQI 54
Moderate
10.62μg/m³
PM2.5
51.93μg/m³
PM10
46.67ppb
O3
0.72ppb
SO2
11.00ppb
NO2
0.19ppm
CO
AQI 54
Moderate
10.58μg/m³
PM2.5
58.56μg/m³
PM10
43.09ppb
O3
0.72ppb
SO2
16.48ppb
NO2
0.19ppm
CO
AQI 54
Moderate
10.74μg/m³
PM2.5
53.45μg/m³
PM10
46.67ppb
O3
0.72ppb
SO2
11.33ppb
NO2
0.19ppm
CO
AQI 52
Moderate
10.46μg/m³
PM2.5
51.62μg/m³
PM10
48.61ppb
O3
0.72ppb
SO2
9.24ppb
NO2
0.19ppm
CO
The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Hillcrest, California are available every hour.
Hillcrest, California experienced its worst air quality at 10:00:00, 2025-06-05.
The best air quality in Hillcrest, California was observed at 03:00:00 on 2025-06-06.
The air quality in Hillcrest, California right now is Moderate, with an AQI of 52.
In Hillcrest, California, PM2.5 is the most frequently found pollutant.
When air quality in Hillcrest, California is compromised, staying indoors and wearing a mask can reduce health risks.
Hillcrest, California currently has a PM2.5 concentration of 9.586 μg/m3.
Hillcrest, California currently has a PM10 concentration of 48.036 μg/m3.
The current carbon monoxide (CO) level in Hillcrest, California is 0.103 ppm.
The current sulfur dioxide (SO2) concentration in Hillcrest, California is 0.604 ppb.
Hillcrest, California currently has an ozone (O3) concentration of 45.799 ppm.
The current level of nitrogen dioxide (NO2) in Hillcrest, California is 9.792 ppb.
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