The AQI in Toronto is currently 34 — Good. Air quality is satisfactory; little or no risk.
| Measurement | Value |
|---|---|
| PM2.5 | 34 |
| Ozone (O₃) | 29.6 |
| NO₂ | 11.5 |
| SO₂ | 0.2 |
| CO | 1.8 |
| Temperature (°C) | 22 |
| Humidity (%) | 43 |
| Pressure (hPa) | 1013.8 |
| Wind (m/s) | 2.5 |
| 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 |
44
36–52
|
34
25–55
|
29
12–109
|
16
14–21
|
19
16–28
|
11
6–18
|
14
13–21
|
39
15–106
|
| PM10 |
13
11–15
|
11
9–17
|
11
5–40
|
6
5–7
|
7
6–10
|
5
3–9
|
6
6–8
|
14
6–39
|
| Ozone |
12
9–19
| |||||||
| UV Index |
0
0–0
|
2
0–8
|
1
0–5
|
2
0–8
|
2
0–6
|
2
0–5
|