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)
67
Moderate
Hillcrest, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
17.86 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
72.98 μg/m³
0
55
155
255
425
605+
40.35 ppb
0
55
71
86
201
201+
0.90 ppb
0
36
76
186
605
1005+
11.43 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Hillcrest, California
Hillcrest, California
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AQI 67
Moderate
17.85μg/m³
PM2.5
74.70μg/m³
PM10
39.33ppb
O3
0.90ppb
SO2
11.66ppb
NO2
0.29ppm
CO
AQI 69
Moderate
19.20μg/m³
PM2.5
77.78μg/m³
PM10
38.74ppb
O3
0.89ppb
SO2
13.62ppb
NO2
0.29ppm
CO
AQI 67
Moderate
17.86μg/m³
PM2.5
72.98μg/m³
PM10
40.35ppb
O3
0.90ppb
SO2
11.43ppb
NO2
0.29ppm
CO
AQI 71
Moderate
20.18μg/m³
PM2.5
79.42μg/m³
PM10
39.28ppb
O3
0.89ppb
SO2
14.72ppb
NO2
0.29ppm
CO
AQI 66
Moderate
17.20μg/m³
PM2.5
72.45μg/m³
PM10
38.17ppb
O3
0.89ppb
SO2
11.60ppb
NO2
0.29ppm
CO
AQI 67
Moderate
18.12μg/m³
PM2.5
76.80μg/m³
PM10
39.24ppb
O3
0.89ppb
SO2
10.92ppb
NO2
0.29ppm
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 02:00:00, 2025-07-14.
The best air quality in Hillcrest, California was observed at 09:00:00 on 2025-07-13.
The air quality in Hillcrest, California right now is Moderate, with an AQI of 67.
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 17.861 μg/m3.
Hillcrest, California currently has a PM10 concentration of 72.983 μg/m3.
The current carbon monoxide (CO) level in Hillcrest, California is 0.29 ppm.
The current sulfur dioxide (SO2) concentration in Hillcrest, California is 0.9 ppb.
Hillcrest, California currently has an ozone (O3) concentration of 40.35 ppm.
The current level of nitrogen dioxide (NO2) in Hillcrest, California is 11.431 ppb.
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