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)
22
Good
Gresham, Oregon
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.13 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.14 μg/m³
0
55
155
255
425
605+
21.85 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
8.31 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Gresham, Oregon
Gresham, Oregon
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AQI 44
Good
8.26μg/m³
PM2.5
36.97μg/m³
PM10
13.84ppb
O3
0.31ppb
SO2
13.83ppb
NO2
0.20ppm
CO
AQI 38
Good
6.80μg/m³
PM2.5
30.05μg/m³
PM10
7.81ppb
O3
0.32ppb
SO2
11.87ppb
NO2
0.20ppm
CO
AQI 49
Good
8.76μg/m³
PM2.5
41.34μg/m³
PM10
13.98ppb
O3
0.31ppb
SO2
13.82ppb
NO2
0.20ppm
CO
AQI 38
Good
7.00μg/m³
PM2.5
30.89μg/m³
PM10
8.37ppb
O3
0.32ppb
SO2
11.57ppb
NO2
0.20ppm
CO
AQI 33
Good
5.66μg/m³
PM2.5
25.15μg/m³
PM10
6.43ppb
O3
0.31ppb
SO2
13.89ppb
NO2
0.20ppm
CO
AQI 44
Good
8.34μg/m³
PM2.5
36.37μg/m³
PM10
14.13ppb
O3
0.32ppb
SO2
10.94ppb
NO2
0.20ppm
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 05:00:00, 2025-10-22.
The best air quality in Gresham, Oregon was observed at 02:00:00 on 2025-10-23.
The air quality in Gresham, Oregon right now is Good, with an AQI of 33.
In Gresham, Oregon, PM2.5 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 6.215 μg/m3.
Gresham, Oregon currently has a PM10 concentration of 28.238 μg/m3.
The current carbon monoxide (CO) level in Gresham, Oregon is 0.198 ppm.
The current sulfur dioxide (SO2) concentration in Gresham, Oregon is 0.37 ppb.
Gresham, Oregon currently has an ozone (O3) concentration of 9.622 ppm.
The current level of nitrogen dioxide (NO2) in Gresham, Oregon is 13.133 ppb.
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