Stay updated with real-time air quality in Gresham, Oregon 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)
18
Good
Gresham, Oregon
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.49 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.19 μg/m³
0
55
155
255
425
605+
18.52 ppb
0
55
71
86
201
201+
0.22 ppb
0
36
76
186
605
1005+
2.24 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Gresham, Oregon
Gresham, Oregon
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AQI 22
Good
4.41μg/m³
PM2.5
21.01μg/m³
PM10
22.67ppb
O3
0.28ppb
SO2
3.34ppb
NO2
0.10ppm
CO
AQI 22
Good
3.74μg/m³
PM2.5
16.78μg/m³
PM10
20.26ppb
O3
0.28ppb
SO2
2.77ppb
NO2
0.10ppm
CO
AQI 22
Good
4.48μg/m³
PM2.5
19.40μg/m³
PM10
23.37ppb
O3
0.28ppb
SO2
3.36ppb
NO2
0.10ppm
CO
AQI 22
Good
3.83μg/m³
PM2.5
17.13μg/m³
PM10
20.31ppb
O3
0.28ppb
SO2
2.67ppb
NO2
0.10ppm
CO
AQI 22
Good
4.00μg/m³
PM2.5
17.58μg/m³
PM10
21.30ppb
O3
0.28ppb
SO2
3.30ppb
NO2
0.10ppm
CO
AQI 22
Good
4.01μg/m³
PM2.5
18.03μg/m³
PM10
20.53ppb
O3
0.28ppb
SO2
2.18ppb
NO2
0.10ppm
CO
The air quality data for Oregon, 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
Air quality updates for Gresham, Oregon are available every hour.
Gresham, Oregon experienced its worst air quality at 03:00:00, 2025-07-22.
The best air quality in Gresham, Oregon was observed at 02:00:00 on 2025-07-21.
The air quality in Gresham, Oregon right now is Good, with an AQI of 18.
In Gresham, Oregon, O3 is the most frequently found pollutant.
When air quality in Gresham, Oregon is compromised, staying indoors and wearing a mask can reduce health risks.
Gresham, Oregon currently has a PM2.5 concentration of 3.451 μg/m3.
Gresham, Oregon currently has a PM10 concentration of 15.087 μg/m3.
The current carbon monoxide (CO) level in Gresham, Oregon is 0.102 ppm.
The current sulfur dioxide (SO2) concentration in Gresham, Oregon is 0.282 ppb.
Gresham, Oregon currently has an ozone (O3) concentration of 18.803 ppm.
The current level of nitrogen dioxide (NO2) in Gresham, Oregon is 3.317 ppb.
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