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
2.67 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.82 μg/m³
0
55
155
255
425
605+
48.17 ppb
0
55
71
86
201
201+
0.70 ppb
0
36
76
186
605
1005+
1.42 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Pleasant Hill, California
Pleasant Hill, California
Scroll To Air Quality MapLoading...
AQI 44
Good
2.67μg/m³
PM2.5
10.86μg/m³
PM10
46.94ppb
O3
0.68ppb
SO2
1.54ppb
NO2
0.23ppm
CO
AQI 44
Good
2.81μg/m³
PM2.5
11.56μg/m³
PM10
47.62ppb
O3
0.70ppb
SO2
1.51ppb
NO2
0.22ppm
CO
AQI 38
Good
3.06μg/m³
PM2.5
12.86μg/m³
PM10
41.21ppb
O3
0.57ppb
SO2
2.21ppb
NO2
0.33ppm
CO
AQI 37
Good
5.00μg/m³
PM2.5
21.84μg/m³
PM10
40.49ppb
O3
0.64ppb
SO2
2.22ppb
NO2
0.36ppm
CO
AQI 43
Good
2.78μg/m³
PM2.5
11.64μg/m³
PM10
46.35ppb
O3
0.70ppb
SO2
1.65ppb
NO2
0.23ppm
CO
AQI 40
Good
2.82μg/m³
PM2.5
11.84μg/m³
PM10
43.44ppb
O3
0.65ppb
SO2
1.92ppb
NO2
0.26ppm
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 08:00:00 on 2026-06-12.
The best air quality in Pleasant Hill, California was recorded at 12:00:00 on 2026-06-12.
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 O3.
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 2.672 μg/m3.
The current PM10 levels in Pleasant Hill, California are 10.822 μg/m3.
The current carbon monoxide (CO) level in Pleasant Hill, California is 0.213 ppm.
The current sulfur dioxide (SO2) levels in Pleasant Hill, California are 0.705 ppb.
The current ozone (O3) levels at Pleasant Hill, California is 48.172 ppm.
The current nitrogen dioxide (NO2) levels at Pleasant Hill, California is 1.417 ppb.
All Rights Reserved © Ambee Inc. 2025