Current air quality index in Concord, California today
Stay updated with real-time air quality in Concord, 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)
19
Good
Concord, California
Last updated: ... (Local time)
Common air pollutants in Concord, California
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
3.43 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
15.03 μg/m³
0
55
155
255
425
605+
Ozone (O3)
19.82 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.18 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
0.83 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.30 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Concord, California
Concord, California
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Air quality in nearby cities
Pleasant Hill, California
AQI 21
Good
3.20μg/m³
PM2.5
12.45μg/m³
PM10
22.76ppb
O3
0.13ppb
SO2
1.21ppb
NO2
0.21ppm
CO
Walnut Creek, California
AQI 20
Good
2.98μg/m³
PM2.5
11.56μg/m³
PM10
22.35ppb
O3
0.17ppb
SO2
1.27ppb
NO2
0.23ppm
CO
Bay Point, California
AQI 20
Good
2.65μg/m³
PM2.5
10.58μg/m³
PM10
22.05ppb
O3
0.28ppb
SO2
1.48ppb
NO2
0.26ppm
CO
Clayton, California
AQI 20
Good
2.80μg/m³
PM2.5
10.95μg/m³
PM10
22.22ppb
O3
0.23ppb
SO2
1.49ppb
NO2
0.24ppm
CO
Martinez, California
AQI 19
Good
1.90μg/m³
PM2.5
7.95μg/m³
PM10
20.41ppb
O3
0.51ppb
SO2
1.17ppb
NO2
0.36ppm
CO
Lafayette, California
AQI 19
Good
2.08μg/m³
PM2.5
8.10μg/m³
PM10
20.60ppb
O3
0.34ppb
SO2
1.52ppb
NO2
0.29ppm
CO
How accurate is California, USA air quality data?
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
Frequently asked questions
How frequently does the air quality data for Concord, California get updated?
Air quality updates for Concord, California are available every hour.
What time in the past 24 hours saw the poorest air quality in Concord, California?
Concord, California experienced its worst air quality at 11:00:00, 2025-07-25.
When was air quality in Concord, California the best over the past 24 hours?
The best air quality in Concord, California was observed at 12:00:00 on 2025-07-26.
What is the air quality in Concord, California right now?
The air quality in Concord, California right now is Good, with an AQI of 21.
What pollutant is most frequently found in Concord, California?
In Concord, California, O3 is the most frequently found pollutant.
What can I do if the air quality in Concord, California is poor?
When air quality in Concord, California is compromised, staying indoors and wearing a mask can reduce health risks.
What is the PM2.5 concentration in Concord, California right now?
Concord, California currently has a PM2.5 concentration of 3.054 μg/m3.
What is the current level of PM10 in Concord, California?
Concord, California currently has a PM10 concentration of 11.929 μg/m3.
What is the current level of carbon monoxide (CO) in Concord, California?
The current carbon monoxide (CO) level in Concord, California is 0.222 ppm.
What is the current level of sulfur dioxide (SO2) in Concord, California?
The current sulfur dioxide (SO2) concentration in Concord, California is 0.166 ppb.
What is the current level of ozone (O3) in Concord, California?
Concord, California currently has an ozone (O3) concentration of 22.588 ppm.
What is the current level of nitrogen dioxide (NO2) in Concord, California?
The current level of nitrogen dioxide (NO2) in Concord, California is 1.185 ppb.
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