Stay updated with real-time air quality in Crestline, 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)
133
Unhealthy for sensitive groups
Crestline, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.80 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
43.99 μg/m³
0
55
155
255
425
605+
79.97 ppb
0
55
71
86
201
201+
0.72 ppb
0
36
76
186
605
1005+
4.89 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Crestline, California
Crestline, California
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AQI 129
Unhealthy for sensitive groups
9.41μg/m³
PM2.5
41.96μg/m³
PM10
78.89ppb
O3
0.72ppb
SO2
5.22ppb
NO2
0.25ppm
CO
AQI 129
Unhealthy for sensitive groups
12.03μg/m³
PM2.5
52.56μg/m³
PM10
79.45ppb
O3
0.70ppb
SO2
8.79ppb
NO2
0.25ppm
CO
AQI 140
Unhealthy for sensitive groups
11.21μg/m³
PM2.5
50.89μg/m³
PM10
81.97ppb
O3
0.69ppb
SO2
7.83ppb
NO2
0.25ppm
CO
AQI 143
Unhealthy for sensitive groups
10.76μg/m³
PM2.5
47.11μg/m³
PM10
83.32ppb
O3
0.69ppb
SO2
6.87ppb
NO2
0.25ppm
CO
AQI 133
Unhealthy for sensitive groups
11.38μg/m³
PM2.5
45.65μg/m³
PM10
80.04ppb
O3
0.66ppb
SO2
9.01ppb
NO2
0.25ppm
CO
AQI 140
Unhealthy for sensitive groups
11.60μg/m³
PM2.5
51.03μg/m³
PM10
81.59ppb
O3
0.66ppb
SO2
7.33ppb
NO2
0.24ppm
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 Crestline, California are available every hour.
Crestline, California experienced its worst air quality at 02:00:00, 2026-07-23.
The best air quality in Crestline, California was observed at 02:00:00 on 2026-07-23.
The air quality in Crestline, California right now is Unhealthy for Sensitive Groups, with an AQI of 133.
In Crestline, California, O3 is the most frequently found pollutant.
When air quality in Crestline, California is compromised, staying indoors and wearing a mask can reduce health risks.
Crestline, California currently has a PM2.5 concentration of 9.801 μg/m3.
Crestline, California currently has a PM10 concentration of 43.993 μg/m3.
The current carbon monoxide (CO) level in Crestline, California is 0.255 ppm.
The current sulfur dioxide (SO2) concentration in Crestline, California is 0.72 ppb.
Crestline, California currently has an ozone (O3) concentration of 79.972 ppm.
The current level of nitrogen dioxide (NO2) in Crestline, California is 4.887 ppb.
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