Nearby locations
O'Fallon, Missouri, United States
Saint Charles County, Missouri, United States
Dardenne Prairie, Missouri, United States
Nearby popular places
Paul A Westhoff Park, United States
Fort Zumwalt State Park, United States
Pallardy Lake, United States

Air Quality in O'Fallon, Missouri, United States

To view the map, please use a browser that supports WebGL.

Pollutants in O'Fallon, United States

PM10
Primary Pollutant
32.1 μg/m3
PM25
9.9 μg/m3
NO2
13 ppb
SO2
0.8 ppb
CO
0.3 ppb
O3
14.2 ppb
Low riskHigh risk

Pollen Index in O'Fallon, United States

Tree
0/5
012345
Weed
0/5
012345
Grass
0/5
012345

Air Quality Forecast in O'Fallon, United States

Thu, September 17
MorningNoonEveningNight
Next day
Next day
AQI

On average, the air quality on this day will be moderate, meaning that air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. According to our index, ranging from 0 to 500, the air quality is going to be between values of 49 and 74.

On average, the air quality on this day will be moderate, meaning that air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. According to our index, ranging from 0 to 500, the air quality is going to be between values of 52 and 79.

69
69
66
56
Next day
Pollen

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

Tree

0
0
0
0

Weed

0
0
0
0

Grass

0
0
0
0
Next day
PM10
20.8 μg/m3
20.7 μg/m3
18.7 μg/m3
11.9 μg/m3
PM25
18.8 μg/m3
18.3 μg/m3
17.2 μg/m3
11.6 μg/m3
NO2
2.8 ppb
4.7 ppb
6 ppb
4.6 ppb
SO2
2 ppb
2.4 ppb
1.9 ppb
0.7 ppb
CO
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
O3
64.8 ppb
79.7 ppb
60.2 ppb
27.9 ppb
AQI

On average, the air quality on this day will be moderate, meaning that air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. According to our index, ranging from 0 to 500, the air quality is going to be between values of 52 and 79.

56
56
53
79
Pollen

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

Tree

0
0
0
0

Weed

0
0
0
0

Grass

0
0
0
0
PM10
11.9 μg/m3
12.5 μg/m3
11.4 μg/m3
25.5 μg/m3
PM25
11.6 μg/m3
11.9 μg/m3
10.3 μg/m3
24 μg/m3
NO2
4.6 ppb
0.9 ppb
5.9 ppb
20.1 ppb
SO2
0.7 ppb
0.6 ppb
0.7 ppb
1 ppb
CO
0.2 ppb
0.2 ppb
0.2 ppb
0.4 ppb
O3
27.9 ppb
46.4 ppb
47.9 ppb
21.7 ppb
AQI

On average, the air quality on this day will be moderate, meaning that air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. According to our index, ranging from 0 to 500, the air quality is going to be between values of 29 and 85.

53
51
51
29
Pollen

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

Tree

0
0
0
0

Weed

0
0
0
0

Grass

0
0
0
0
PM10
10.4 μg/m3
9.7 μg/m3
10.3 μg/m3
5.1 μg/m3
PM25
10 μg/m3
9.2 μg/m3
9.3 μg/m3
4.9 μg/m3
NO2
4.9 ppb
1 ppb
1.4 ppb
4.6 ppb
SO2
0.4 ppb
0.5 ppb
0.3 ppb
0.3 ppb
CO
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
O3
26.3 ppb
52.1 ppb
54.6 ppb
31 ppb
AQI

On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 16 and 34.

22
0
0
0
Pollen

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

Tree

0
-
Not Available
-
Not Available
-
Not Available

Weed

0
-
Not Available
-
Not Available
-
Not Available

Grass

0
-
Not Available
-
Not Available
-
Not Available
PM10
3.9 μg/m3
N/A
N/A
N/A
PM25
3.9 μg/m3
N/A
N/A
N/A
NO2
7.4 ppb
N/A
N/A
N/A
SO2
0.8 ppb
N/A
N/A
N/A
CO
0.2 ppb
N/A
N/A
N/A
O3
11.9 ppb
N/A
N/A
N/A