Air quality right now · St. Joseph, MI
55
Moderate
US Air Quality Index
Air is okay for most people
Can I go out?
Good to go — clear for the next 48h (AQI 55).
Peak forecast AQI 56 around Sep 15, 07:00 PM EDT.
Smoke & plume watch
Smoke/haze approaching from the NW — AQI ~143 about 15 km upwind, ETA ~2.9 h at 1.4 m/s.
Approaching from the NW
· ETA ~2.9 h
· upwind AQI ~143
· confidence medium
See it on the map
Wind
—
No data
Last 24 hours
PM2.5 AQI
Next 24 hours
CAMS · our-calc
Full forecast
Today
7pm
56
8pm
44
9pm
35
10pm
32
11pm
28
Tmrw
12am
26
1am
25
2am
24
3am
24
4am
22
5am
22
6am
22
7am
21
8am
22
9am
24
10am
27
11am
31
12pm
33
1pm
37
2pm
39
3pm
40
4pm
39
5pm
37
6pm
35
Modelled hourly outlook (CAMS).
See confidence & details →
Readings by source
Details
| Source | AQI | Level | Pollutant | Updated |
|---|---|---|---|---|
| AirNow | 44 | Good | Ozone | Sep 15, 06:00 PM EDT |
| Home | 55 | Moderate | PM2.5 | Sep 15, 06:26 PM EDT |
| Open-Meteo Lagging | 97 | Moderate | Ozone | Sep 15, 06:00 PM EDT |
| OpenWeather | 41 | Good | Ozone | Sep 15, 06:27 PM EDT |
| PurpleAir Lagging | 60 | Moderate | PM2.5 | Jul 20, 03:31 AM EDT |
| PurpleAir Lagging | 72 | Moderate | PM2.5 | Jul 20, 03:41 AM EDT |
| PurpleAir | 54 | Moderate | PM2.5 | Sep 15, 06:27 PM EDT |
| PurpleAir | 48 | Good | PM2.5 | Sep 15, 06:27 PM EDT |
| PurpleAir | 45 | Good | PM2.5 | Sep 15, 06:27 PM EDT |
| PurpleAir | 56 | Moderate | PM2.5 | Sep 15, 06:27 PM EDT |
| PurpleAir Lagging | 12 | Good | PM2.5 | Sep 14, 11:07 AM EDT |
| PurpleAir | 57 | Moderate | PM2.5 | Sep 15, 06:27 PM EDT |
| PurpleAir | 56 | Moderate | PM2.5 | Sep 15, 06:27 PM EDT |
| WAQI | 44 | Good | Ozone | Sep 15, 06:00 PM EDT |