Real-time air quality index in Arcata, California today
Stay updated with real-time air quality in Arcata, 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)
25
Good
Arcata, California
Last updated: ... (Local time)
Common air pollutants in Arcata, California
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
1.65 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
7.15 μg/m³
0
55
155
255
425
605+
Ozone (O3)
26.74 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.72 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
1.33 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Arcata, California
Arcata, California
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Arcata, California air quality map: Real-time AQI near you
Air quality in nearby cities
McKinleyville, California
AQI 24
Good
2.55μg/m³
PM2.5
16.17μg/m³
PM10
26.08ppb
O3
0.72ppb
SO2
1.30ppb
NO2
0.22ppm
CO
Eureka, California
AQI 25
Good
1.41μg/m³
PM2.5
6.02μg/m³
PM10
26.82ppb
O3
0.72ppb
SO2
1.29ppb
NO2
0.24ppm
CO
Fortuna, California
AQI 25
Good
2.55μg/m³
PM2.5
13.89μg/m³
PM10
27.13ppb
O3
0.71ppb
SO2
1.29ppb
NO2
0.24ppm
CO
Shasta Lake, California
AQI 31
Good
5.22μg/m³
PM2.5
19.81μg/m³
PM10
32.95ppb
O3
0.72ppb
SO2
1.79ppb
NO2
0.21ppm
CO
Redding, California
AQI 44
Good
7.89μg/m³
PM2.5
34.73μg/m³
PM10
32.30ppb
O3
0.72ppb
SO2
1.79ppb
NO2
0.21ppm
CO
Anderson, California
AQI 44
Good
7.79μg/m³
PM2.5
33.74μg/m³
PM10
32.51ppb
O3
0.72ppb
SO2
1.78ppb
NO2
0.21ppm
CO
How accurate is California, USA air quality data?
Air quality measurements for California, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Frequently asked questions
How frequently is the air quality data for Arcata, California updated?
Air quality data for Arcata, California is updated on an hourly basis.
When did Arcata, California experience the worst air quality in the last 24 hours?
The worst air quality in Arcata, California was recorded at 05:00:00 on 2026-06-26.
When did Arcata, California have its best air quality in the last 24 hours?
The best air quality in Arcata, California was recorded at 03:00:00 on 2026-06-26.
What is the real-time air quality index for Arcata, California?
The real-time air quality index in Arcata, California is 25, currently categorized as Good.
Which pollutant is found most often in Arcata, California?
The most common pollutant in Arcata, California is O3.
What can I do if the air quality in Arcata, California is poor?
If the air quality in Arcata, California is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Arcata, California?
The measured PM2.5 levels in Arcata, California at present are 1.652 μg/m3.
What are the current PM10 levels at Arcata, California?
The current PM10 levels in Arcata, California are 7.15 μg/m3.
What are the current carbon monoxide (CO) levels at Arcata, California?
The current carbon monoxide (CO) level in Arcata, California is 0.234 ppm.
What are the current sulfur dioxide (SO2) levels at Arcata, California?
The current sulfur dioxide (SO2) levels in Arcata, California are 0.716 ppb.
What are the current ozone (O3) levels at Arcata, California?
The current ozone (O3) levels at Arcata, California is 26.744 ppm.
What are the current nitrogen dioxide (NO2) levels at Arcata, California?
The current nitrogen dioxide (NO2) levels at Arcata, California is 1.327 ppb.
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