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)
20
Good
Daly City, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
2.47 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.91 μg/m³
0
55
155
255
425
605+
21.52 ppb
0
55
71
86
201
201+
0.50 ppb
0
36
76
186
605
1005+
3.09 ppb
0
54
101
361
1250
2050+
0.29 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 27
Good
4.95μg/m³
PM2.5
14.01μg/m³
PM10
15.67ppb
O3
0.57ppb
SO2
2.82ppb
NO2
0.32ppm
CO
AQI 22
Good
4.04μg/m³
PM2.5
18.18μg/m³
PM10
16.22ppb
O3
0.55ppb
SO2
2.77ppb
NO2
0.32ppm
CO
AQI 22
Good
4.04μg/m³
PM2.5
18.18μg/m³
PM10
16.22ppb
O3
0.55ppb
SO2
2.77ppb
NO2
0.32ppm
CO
AQI 16
Good
3.18μg/m³
PM2.5
14.32μg/m³
PM10
17.01ppb
O3
0.47ppb
SO2
1.87ppb
NO2
0.21ppm
CO
AQI 22
Good
3.94μg/m³
PM2.5
15.75μg/m³
PM10
17.00ppb
O3
0.57ppb
SO2
2.85ppb
NO2
0.32ppm
CO
AQI 22
Good
3.98μg/m³
PM2.5
15.87μg/m³
PM10
15.63ppb
O3
0.59ppb
SO2
3.39ppb
NO2
0.33ppm
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 04:00:00 on 2025-07-12.
In the last 24 hours, the best air quality in Daly City, California was observed at 04:00:00 on 2025-07-12.
As of now, the AQI in Daly City, California is 22, 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 3.532 μg/m3.
The PM10 concentration in Daly City, California is 15.71 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Daly City, California is 0.276 ppm.
Currently, Daly City, California has a sulfur dioxide (SO2) concentration of 0.402 ppb.
The current ozone (O3) level in Daly City, California at the moment is 17.057 ppm.
Nitrogen dioxide (NO2) level in Daly City, California at the moment is 2.649 ppb.
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