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)
33
Good
Hillcrest, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.23 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.55 μg/m³
0
55
155
255
425
605+
23.51 ppb
0
55
71
86
201
201+
0.38 ppb
0
36
76
186
605
1005+
7.41 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Hillcrest, California
Hillcrest, California
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AQI 38
Good
6.52μg/m³
PM2.5
26.90μg/m³
PM10
21.24ppb
O3
0.38ppb
SO2
7.61ppb
NO2
0.21ppm
CO
AQI 38
Good
6.79μg/m³
PM2.5
26.06μg/m³
PM10
18.84ppb
O3
0.37ppb
SO2
8.48ppb
NO2
0.21ppm
CO
AQI 33
Good
6.23μg/m³
PM2.5
25.55μg/m³
PM10
23.51ppb
O3
0.38ppb
SO2
7.41ppb
NO2
0.21ppm
CO
AQI 38
Good
7.21μg/m³
PM2.5
26.56μg/m³
PM10
16.14ppb
O3
0.37ppb
SO2
8.75ppb
NO2
0.21ppm
CO
AQI 27
Good
5.38μg/m³
PM2.5
22.46μg/m³
PM10
27.34ppb
O3
0.37ppb
SO2
8.42ppb
NO2
0.22ppm
CO
AQI 38
Good
6.76μg/m³
PM2.5
28.31μg/m³
PM10
19.97ppb
O3
0.38ppb
SO2
8.17ppb
NO2
0.21ppm
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, 2026-04-24.
The best air quality in Hillcrest, California was observed at 05:00:00 on 2026-04-23.
The air quality in Hillcrest, California right now is Good, with an AQI of 33.
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 6.231 μg/m3.
Hillcrest, California currently has a PM10 concentration of 25.549 μg/m3.
The current carbon monoxide (CO) level in Hillcrest, California is 0.214 ppm.
The current sulfur dioxide (SO2) concentration in Hillcrest, California is 0.383 ppb.
Hillcrest, California currently has an ozone (O3) concentration of 23.508 ppm.
The current level of nitrogen dioxide (NO2) in Hillcrest, California is 7.412 ppb.
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