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Air quality in St. Louis County

Air quality index (AQI⁺) and PM2.5 air pollution in St. Louis County • 04:00, Jun 17 Local time

US AQI⁺

Good

Main pollutant:

O₃

64 µg/m³

13°

13 km/h

63 %

Hourly forecast

St. Louis County air quality index (AQI⁺) forecast

Now

13°

km/h

63%

05:00

13°

km/h

72%

06:00

12°

km/h

83%

07:00

12°

km/h

87%

08:00

12°

km/h

82%

09:00

12°

km/h

90%

10:00

90%

12°

km/h

92%

11:00

13°

km/h

84%

12:00

90%

12°

km/h

92%

13:00

90%

11°

km/h

95%

14:00

11°

km/h

94%

15:00

90%

11°

km/h

91%

16:00

90%

11°

km/h

90%

17:00

11°

km/h

91%

18:00

12°

km/h

86%

19:00

12°

km/h

86%

20:00

12°

km/h

88%

21:00

90%

11°

km/h

91%

22:00

90%

11°

km/h

95%

23:00

11°

km/h

97%

Thu

00:00

90%

10°

km/h

98%

01:00

90%

10°

km/h

98%

02:00

10°

km/h

98%

03:00

10°

km/h

98%

04:00

10°

km/h

98%

05:00

9°

km/h

99%

06:00

10°

km/h

98%

07:00

11°

km/h

96%

08:00

12°

km/h

96%

09:00

12°

km/h

96%

10:00

90%

12°

km/h

95%

11:00

90%

12°

km/h

93%

12:00

12°

km/h

91%

13:00

90%

12°

km/h

96%

14:00

12°

km/h

95%

15:00

90%

11°

km/h

88%

16:00

13°

km/h

78%

17:00

13°

km/h

84%

18:00

14°

km/h

68%

19:00

13°

km/h

67%

20:00

13°

km/h

64%

21:00

12°

km/h

64%

22:00

11°

km/h

65%

23:00

11°

km/h

66%

Fri

00:00

11°

km/h

65%

01:00

11°

km/h

69%

02:00

9°

km/h

77%

03:00

9°

km/h

78%

04:00

8°

km/h

82%

05:00

7°

km/h

87%

06:00

8°

km/h

86%

07:00

9°

km/h

83%

08:00

11°

km/h

71%

09:00

13°

km/h

65%

10:00

13°

km/h

67%

11:00

11°

km/h

83%

12:00

9°

km/h

95%

13:00

10°

km/h

95%

14:00

12°

km/h

85%

15:00

13°

km/h

86%

16:00

14°

km/h

75%

17:00

14°

km/h

79%

18:00

14°

km/h

85%

19:00

14°

km/h

86%

20:00

90%

12°

km/h

94%

21:00

11°

km/h

95%

22:00

10°

km/h

97%

23:00

8°

km/h

99%

Sat

00:00

8°

km/h

99%

01:00

7°

km/h

99%

02:00

6°

km/h

98%

03:00

6°

km/h

99%

Daily forecast

St. Louis County air quality index (AQI⁺) forecast

Today

90%

13°

11°

km/h

89%

Thu

14°

10°

km/h

84%

Fri

14°

8°

km/h

84%

Air pollutants

What is the current air quality in St. Louis County?

PM2.5 concentration currently meets the WHO annual PM2.5 guideline.

Real-time St. Louis County air pollution map

Health recommendations

Enjoy outdoor activities

Open your windows to bring clean, fresh air indoors

Get a monitor

Protect yourself from air pollution in St. Louis County

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Monitor the air you breathe

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AirVisual Series

Medical grade air purifiers

Trusted worldwide, the HealthPro Series uses HyperHEPA technology. Filters ultrafine particles other air purifiers miss, delivering medical-grade protection.

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Powerful, stylish air purifiers

Compact and powerful, the Atem Series combines Swiss engineering with high-performance air purification, filtering ultrafine particles with HyperHEPA technology.

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Pollen

What is the pollen count in St. Louis County today?

Index

High

Tree

None

Grass

High

75%

Weed

Low

25%

Source:

wetter.com

Pollen forecast in St. Louis County

Health recommendations

Enjoy outdoor activities

Open your windows to bring clean, fresh air indoors

Get a monitor

Real-time St. Louis County air pollution map

Pollen

What is the pollen count in St. Louis County today?

Index

High

Tree

None

Grass

High

75%

Weed

Low

25%

Source:

wetter.com

Pollen forecast in St. Louis County

Protect yourself from air pollution in St. Louis County

SHOP IQAIR PRODUCTS

Monitor the air you breathe

Get accurate AirVisual air quality readings and real-time insights for cleaner air. Monitors that reveal pollution sources, highlight when air purifier use is needed.

AirVisual Series

Medical grade air purifiers

Trusted worldwide, the HealthPro Series uses HyperHEPA technology. Filters ultrafine particles other air purifiers miss, delivering medical-grade protection.

HealthPro Series

Powerful, stylish air purifiers

Compact and powerful, the Atem Series combines Swiss engineering with high-performance air purification, filtering ultrafine particles with HyperHEPA technology.

Atem Series

Most polluted locations near St. Louis County

Worldwide AQI⁺ ranking

Station ranking

Real-time AQI⁺ station ranking for stations in St. Louis County

#	Stations	AQI⁺ US
1	Voyageurs NP	26
2	Voyageurs National Park - Sullivan Bay	23
3	6310 Crane Lake Rd	15
4	North Woods School	11

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Avenal, California	70
2	Glendora, California	66
3	El Paso, Texas	63
4	Honaunau-Napoopoo, Hawaii	62
5	Beaumont, California	60
6	Jurupa Valley, California	60
7	Little Rock, Arkansas	60
8	Palm Desert, California	60
9	Visalia, California	60
10	East Los Angeles, California	59

History

Historic air quality graph for St. Louis County

30 AQI⁺ US

Good

04:00–05:00 Jun 17 Local time

AQI⁺ US

History

Historic air quality graph for St. Louis County

30 AQI⁺ US

Good

04:00–05:00 Jun 17 Local time

AQI⁺ US

Most polluted locations near St. Louis County

Worldwide AQI⁺ ranking

Station ranking

Real-time AQI⁺ station ranking for stations in St. Louis County

#	Stations	AQI⁺ US
1	Voyageurs NP	26
2	Voyageurs National Park - Sullivan Bay	23
3	6310 Crane Lake Rd	15
4	North Woods School	11

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Avenal, California	70
2	Glendora, California	66
3	El Paso, Texas	63
4	Honaunau-Napoopoo, Hawaii	62
5	Beaumont, California	60
6	Jurupa Valley, California	60
7	Little Rock, Arkansas	60
8	Palm Desert, California	60
9	Visalia, California	60
10	East Los Angeles, California	59