The AQI in Portland is currently 19 — Good. Air quality is satisfactory; little or no risk.
| Measurement | Value |
|---|---|
| PM2.5 | 19 |
| Ozone (O₃) | 0.1 |
| NO₂ | 3.8 |
| SO₂ | 1.5 |
| CO | 0.1 |
| Temperature (°C) | 14.1 |
| Humidity (%) | 82.5 |
| Pressure (hPa) | 1012.6 |
| Pollutant | Mon, May 25 | Tue, May 26 | Wed, May 27 | Thu, May 28 | Fri, May 29 | Sat, May 30 | Sun, May 31 | Mon, Jun 1 |
|---|---|---|---|---|---|---|---|---|
| PM2.5 |
12
11–15
|
14
11–17
|
27
13–43
|
22
12–41
|
11
10–12
|
8
6–10
|
12
6–20
|
20
14–53
|
| PM10 |
5
4–6
|
5
5–6
|
11
5–14
|
10
6–15
|
6
5–7
|
4
3–5
|
5
3–8
|
8
5–17
|
| UV Index |
0
0–1
|
1
0–6
|
1
0–6
|
0
0–3
|
1
0–6
|
2
0–7
|