Worst air pollution St. Joseph, today and tomorrow
Today (16 July): Air quality in St. Joseph is fair. PM2.5 and O3 are fair; AQI and NO2 are medium; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 40.1/100).
Tomorrow (17 July 2026): Air quality in St. Joseph is fair. All pollutants stay as today. Pollution peaks around 12:00 AM (NO2: 41.4/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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St. Joseph's air quality reflects the Missouri River valley's flat terrain at the Missouri-Kansas border, with vehicle emissions from I-29 and surrounding manufacturing and agricultural processing operations contributing local sources. The flat Missouri River flood plain provides generally good wind dispersal, while summer ozone from regional agricultural and vehicle sources across the broader Midwest airshed is the primary warm-season concern throughout the year.
Today - 16 July | Pollution peaks at 23:00
AQI:
Medium
40.1/100
PM2.5 (fine particles):
Fair
20.7/100
PM10 (coarse particles):
Good
16.0/100
NO2 (nitrogen dioxide):
Medium
40.1/100
O3 (ozone):
Fair
37.2/100
SO2 (sulfur dioxide):
Good
8.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.7/100
PM1 (ultrafine particles):
Good
13.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 00:00
AQI:
Medium
41.4/100
PM2.5 (fine particles):
Fair
22.7/100
PM10 (coarse particles):
Good
14.2/100
NO2 (nitrogen dioxide):
Medium
41.4/100
O3 (ozone):
Fair
39.1/100
SO2 (sulfur dioxide):
Good
7.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
15.2/100
Pollen forecast in St. Joseph
View pollen forecastFrequently Asked Questions
Is air quality bad in St. Joseph right now?
On 16 July 2026, overall air quality in St. Joseph is fair. O3 is the main pollutant at 37.2/100. Pollution peaks around 11:00 PM (NO2: 40.1/100).
Will air quality be worse tomorrow in St. Joseph?
On 17 July 2026, air quality conditions in St. Joseph will be similar to today, with O3 forecast at fair at 39.1/100. Pollution peaks around 12:00 AM (NO2: 41.4/100).
When is air pollution at its worst in St. Joseph?
Air quality across St. Joseph rises and falls with the seasons. Typically, winter generally brings the cleanest air, aside from brief inversion episodes during calm cold spells, while summer heat waves and the dust of planting and harvest seasons are the main annual concerns. Wide-open terrain generally helps disperse pollution quickly once the wind picks up.
Are air quality levels in St. Joseph based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app