Stay updated with real-time air quality in Daly City, 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)
38
Good
Daly City, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.60 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.37 μg/m³
0
55
155
255
425
605+
17.93 ppb
0
55
71
86
201
201+
0.63 ppb
0
36
76
186
605
1005+
2.58 ppb
0
54
101
361
1250
2050+
0.33 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Daly City, California
Daly City, California
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AQI 17
Good
2.07μg/m³
PM2.5
12.22μg/m³
PM10
17.57ppb
O3
0.67ppb
SO2
1.81ppb
NO2
0.42ppm
CO
AQI 16
Good
2.20μg/m³
PM2.5
11.57μg/m³
PM10
17.41ppb
O3
0.67ppb
SO2
1.81ppb
NO2
0.41ppm
CO
AQI 16
Good
2.20μg/m³
PM2.5
11.57μg/m³
PM10
17.41ppb
O3
0.67ppb
SO2
1.81ppb
NO2
0.41ppm
CO
AQI 15
Good
2.18μg/m³
PM2.5
9.40μg/m³
PM10
16.14ppb
O3
0.65ppb
SO2
1.45ppb
NO2
0.31ppm
CO
AQI 17
Good
2.10μg/m³
PM2.5
11.55μg/m³
PM10
17.57ppb
O3
0.67ppb
SO2
1.84ppb
NO2
0.42ppm
CO
AQI 19
Good
2.00μg/m³
PM2.5
12.16μg/m³
PM10
20.87ppb
O3
0.67ppb
SO2
1.82ppb
NO2
0.42ppm
CO
Air quality and pollutant data for California, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Daly City, California is updated every hour for accuracy.
In the past 24 hours, the air quality in Daly City, California was at its worst at 12:00:00 on 2025-07-27.
In the last 24 hours, the best air quality in Daly City, California was observed at 02:00:00 on 2025-07-27.
As of now, the AQI in Daly City, California is 16, indicating Good conditions.
Daly City, California air has the highest levels of PM2.5.
Poor air quality in Daly City, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Daly City, California are currently 2.521 μg/m3.
The PM10 concentration in Daly City, California is 10.963 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Daly City, California is 0.376 ppm.
Currently, Daly City, California has a sulfur dioxide (SO2) concentration of 0.649 ppb.
The current ozone (O3) level in Daly City, California at the moment is 16.397 ppm.
Nitrogen dioxide (NO2) level in Daly City, California at the moment is 1.709 ppb.
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