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)
29
Good
Gresham, Oregon
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.31 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.36 μg/m³
0
55
155
255
425
605+
30.71 ppb
0
55
71
86
201
201+
0.12 ppb
0
36
76
186
605
1005+
9.67 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Gresham, Oregon
Gresham, Oregon
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AQI 49
Good
9.49μg/m³
PM2.5
42.19μg/m³
PM10
29.54ppb
O3
0.44ppb
SO2
9.87ppb
NO2
0.20ppm
CO
AQI 64
Moderate
15.88μg/m³
PM2.5
70.17μg/m³
PM10
25.80ppb
O3
0.37ppb
SO2
8.30ppb
NO2
0.19ppm
CO
AQI 56
Moderate
11.77μg/m³
PM2.5
51.59μg/m³
PM10
26.60ppb
O3
0.48ppb
SO2
10.95ppb
NO2
0.21ppm
CO
AQI 49
Good
9.30μg/m³
PM2.5
40.70μg/m³
PM10
30.02ppb
O3
0.36ppb
SO2
7.92ppb
NO2
0.19ppm
CO
AQI 54
Moderate
10.83μg/m³
PM2.5
47.63μg/m³
PM10
30.65ppb
O3
0.42ppb
SO2
9.45ppb
NO2
0.20ppm
CO
AQI 71
Moderate
20.06μg/m³
PM2.5
88.45μg/m³
PM10
24.61ppb
O3
0.37ppb
SO2
8.06ppb
NO2
0.19ppm
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, 2026-04-24.
The best air quality in Gresham, Oregon was observed at 05:00:00 on 2026-04-23.
The air quality in Gresham, Oregon right now is Moderate, with an AQI of 64.
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 16.213 μg/m3.
Gresham, Oregon currently has a PM10 concentration of 71.137 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 0.418 ppb.
Gresham, Oregon currently has an ozone (O3) concentration of 24.693 ppm.
The current level of nitrogen dioxide (NO2) in Gresham, Oregon is 9.405 ppb.
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