Stay updated with real-time air quality in Pleasant Hill, 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)
44
Good
Pleasant Hill, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.19 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
36.47 μg/m³
0
55
155
255
425
605+
38.01 ppb
0
55
71
86
201
201+
0.22 ppb
0
36
76
186
605
1005+
1.34 ppb
0
54
101
361
1250
2050+
0.30 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Pleasant Hill, California
Pleasant Hill, California
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AQI 44
Good
8.16μg/m³
PM2.5
36.34μg/m³
PM10
38.26ppb
O3
0.23ppb
SO2
1.47ppb
NO2
0.30ppm
CO
AQI 44
Good
8.02μg/m³
PM2.5
35.58μg/m³
PM10
37.94ppb
O3
0.23ppb
SO2
1.30ppb
NO2
0.30ppm
CO
AQI 44
Good
7.95μg/m³
PM2.5
35.29μg/m³
PM10
39.04ppb
O3
0.32ppb
SO2
2.00ppb
NO2
0.30ppm
CO
AQI 34
Good
6.02μg/m³
PM2.5
26.45μg/m³
PM10
37.32ppb
O3
0.36ppb
SO2
1.42ppb
NO2
0.29ppm
CO
AQI 44
Good
7.77μg/m³
PM2.5
34.25μg/m³
PM10
38.10ppb
O3
0.26ppb
SO2
1.48ppb
NO2
0.29ppm
CO
AQI 44
Good
7.70μg/m³
PM2.5
33.90μg/m³
PM10
38.88ppb
O3
0.32ppb
SO2
1.66ppb
NO2
0.28ppm
CO
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
Air quality data for Pleasant Hill, California is updated on an hourly basis.
The worst air quality in Pleasant Hill, California was recorded at 05:00:00 on 2026-04-25.
The best air quality in Pleasant Hill, California was recorded at 12:00:00 on 2026-04-25.
The real-time air quality index in Pleasant Hill, California is 44, currently categorized as Good.
The most common pollutant in Pleasant Hill, California is PM2.5.
If the air quality in Pleasant Hill, California is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Pleasant Hill, California at present are 8.185 μg/m3.
The current PM10 levels in Pleasant Hill, California are 36.467 μg/m3.
The current carbon monoxide (CO) level in Pleasant Hill, California is 0.298 ppm.
The current sulfur dioxide (SO2) levels in Pleasant Hill, California are 0.217 ppb.
The current ozone (O3) levels at Pleasant Hill, California is 38.013 ppm.
The current nitrogen dioxide (NO2) levels at Pleasant Hill, California is 1.343 ppb.
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