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Air quality in Boulder County

Air quality index (AQI⁺) and PM2.5 air pollution in Boulder County • 160.5K Followers • 16:00, May 28 Local time

Milliken AQI Alert nearby

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US AQI⁺

Good

Main pollutant:

PM2.5

5.3 µg/m³

17°

11 km/h

61 %

Hourly forecast

Boulder County air quality index (AQI⁺) forecast

Now

17°

km/h

61%

17:00

16°

km/h

67%

18:00

15°

km/h

68%

19:00

14°

km/h

80%

20:00

90%

12°

km/h

96%

21:00

90%

11°

km/h

88%

22:00

10°

km/h

99%

23:00

90%

10°

km/h

94%

Fri

00:00

90%

10°

km/h

82%

01:00

11°

km/h

78%

02:00

12°

km/h

64%

03:00

90%

12°

km/h

63%

04:00

13°

km/h

55%

05:00

12°

km/h

52%

06:00

12°

km/h

50%

07:00

12°

km/h

46%

08:00

13°

km/h

47%

09:00

14°

km/h

43%

10:00

16°

km/h

43%

11:00

16°

km/h

45%

12:00

17°

km/h

44%

13:00

18°

km/h

44%

14:00

18°

km/h

40%

15:00

17°

km/h

40%

16:00

17°

km/h

44%

17:00

18°

km/h

36%

18:00

18°

km/h

37%

19:00

17°

km/h

38%

20:00

16°

km/h

39%

21:00

15°

km/h

46%

22:00

12°

km/h

68%

23:00

12°

km/h

69%

Sat

00:00

11°

km/h

61%

01:00

12°

km/h

53%

02:00

10°

km/h

62%

03:00

9°

km/h

61%

04:00

8°

km/h

62%

05:00

7°

km/h

62%

06:00

7°

km/h

56%

07:00

8°

km/h

55%

08:00

9°

km/h

50%

09:00

10°

km/h

48%

10:00

11°

km/h

44%

11:00

13°

km/h

40%

12:00

14°

km/h

36%

13:00

15°

km/h

32%

14:00

16°

km/h

28%

15:00

16°

km/h

26%

16:00

11°

km/h

61%

17:00

13°

km/h

46%

18:00

12°

km/h

48%

19:00

14°

km/h

27%

20:00

11°

km/h

35%

21:00

8°

km/h

44%

22:00

7°

km/h

47%

23:00

6°

km/h

49%

Sun

00:00

6°

km/h

52%

01:00

5°

km/h

56%

02:00

6°

km/h

55%

03:00

5°

km/h

53%

04:00

5°

km/h

52%

05:00

5°

km/h

49%

06:00

5°

km/h

47%

07:00

9°

km/h

39%

08:00

13°

km/h

27%

09:00

15°

km/h

22%

10:00

17°

km/h

19%

11:00

19°

km/h

17%

12:00

20°

km/h

15%

13:00

20°

km/h

14%

14:00

21°

km/h

15%

15:00

18°

km/h

25%

Daily forecast

Boulder County air quality index (AQI⁺) forecast

Today

17°

8°

km/h

79%

Fri

18°

12°

km/h

44%

Sat

16°

7°

km/h

42%

Air pollutants

What is the current air quality in Boulder County?

PM2.5 concentration is currently 1.1 times the World Health Organization annual PM2.5 guideline value.

Real-time Boulder 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 Boulder County

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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

Pollen

What is the pollen count in Boulder County today?

Index

Low

Tree

Low

25%

Grass

Low

25%

Weed

None

Source:

wetter.com

Pollen forecast in Boulder County

Health recommendations

Enjoy outdoor activities

Open your windows to bring clean, fresh air indoors

Get a monitor

Real-time Boulder County air pollution map

Pollen

What is the pollen count in Boulder County today?

Index

Low

Tree

Low

25%

Grass

Low

25%

Weed

None

Source:

wetter.com

Pollen forecast in Boulder County

Protect yourself from air pollution in Boulder 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 Boulder County

Worldwide AQI⁺ ranking

Station ranking

Real-time AQI⁺ station ranking for stations in Boulder County

#	Stations	AQI⁺ US
1	818 Co Rd 116	43
2	5555 Valmont Rd	35
3	32-16 Flamingo Dr	29
4	5875-5817 Valmont Rd	29
5	161 Swallow Ln	28
6	5699-5669 Valmont Rd	28
7	5771-5701 Valmont Rd	28
8	5667-5557 Valmont Rd	27
9	5668-5698 Valmont Rd	26
10	47th Street	20

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Avenal, California	163
2	Galveston, Texas	96
3	Lincoln, Oregon	71
4	Houston, Texas	65
5	Mission, Texas	62
6	Muscatine, Iowa	62
7	Emmetsburg, Iowa	61
8	Austin, Texas	60
9	La Plata County, Colorado	57
10	Archuleta, Colorado	56

History

Historic air quality graph for Boulder County

29 AQI⁺ US

Good

15:00–16:00 May 28 Local time

AQI⁺ US

History

Historic air quality graph for Boulder County

29 AQI⁺ US

Good

15:00–16:00 May 28 Local time

AQI⁺ US

Most polluted locations near Boulder County

Worldwide AQI⁺ ranking

Station ranking

Real-time AQI⁺ station ranking for stations in Boulder County

#	Stations	AQI⁺ US
1	818 Co Rd 116	43
2	5555 Valmont Rd	35
3	32-16 Flamingo Dr	29
4	5875-5817 Valmont Rd	29
5	161 Swallow Ln	28
6	5699-5669 Valmont Rd	28
7	5771-5701 Valmont Rd	28
8	5667-5557 Valmont Rd	27
9	5668-5698 Valmont Rd	26
10	47th Street	20

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Avenal, California	163
2	Galveston, Texas	96
3	Lincoln, Oregon	71
4	Houston, Texas	65
5	Mission, Texas	62
6	Muscatine, Iowa	62
7	Emmetsburg, Iowa	61
8	Austin, Texas	60
9	La Plata County, Colorado	57
10	Archuleta, Colorado	56