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Air quality in Boulder County

Air quality index (AQI⁺) and PM2.5 air pollution in Boulder County • 160.6K Followers • 16:00, May 31 Local time

Milliken AQI Alert nearby

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US AQI⁺

Good

Main pollutant:

PM2.5

4.8 µg/m³

18°

19 km/h

30 %

Hourly forecast

Boulder County air quality index (AQI⁺) forecast

Now

18°

km/h

30%

17:00

17°

km/h

32%

18:00

17°

km/h

32%

19:00

16°

km/h

35%

20:00

15°

km/h

37%

21:00

13°

km/h

41%

22:00

12°

km/h

41%

23:00

12°

km/h

45%

Mon

00:00

11°

km/h

46%

01:00

12°

km/h

41%

02:00

12°

km/h

42%

03:00

11°

km/h

46%

04:00

9°

km/h

53%

05:00

9°

km/h

56%

06:00

9°

km/h

57%

07:00

9°

km/h

60%

08:00

10°

km/h

59%

09:00

11°

km/h

61%

10:00

12°

km/h

64%

11:00

13°

km/h

59%

12:00

15°

km/h

57%

13:00

16°

km/h

53%

14:00

90%

15°

km/h

58%

15:00

90%

13°

km/h

79%

16:00

16°

km/h

56%

17:00

16°

km/h

56%

18:00

15°

km/h

60%

19:00

90%

13°

km/h

74%

20:00

12°

km/h

78%

21:00

10°

km/h

92%

22:00

10°

km/h

86%

23:00

10°

km/h

80%

Tue

00:00

11°

km/h

79%

01:00

10°

km/h

82%

02:00

9°

km/h

89%

03:00

9°

km/h

91%

04:00

9°

km/h

79%

05:00

9°

km/h

75%

06:00

10°

km/h

63%

07:00

11°

km/h

61%

08:00

13°

km/h

61%

09:00

15°

km/h

60%

10:00

15°

km/h

67%

11:00

16°

km/h

72%

12:00

17°

km/h

66%

13:00

18°

km/h

56%

14:00

19°

km/h

44%

15:00

19°

km/h

47%

16:00

20°

km/h

47%

17:00

90%

16°

km/h

59%

18:00

90%

17°

km/h

46%

19:00

13°

km/h

61%

20:00

11°

km/h

72%

21:00

9°

km/h

80%

22:00

9°

km/h

76%

23:00

9°

km/h

78%

Wed

00:00

8°

km/h

82%

01:00

8°

km/h

76%

02:00

9°

km/h

66%

03:00

9°

km/h

62%

04:00

8°

km/h

62%

05:00

7°

km/h

63%

06:00

8°

km/h

55%

07:00

12°

km/h

43%

08:00

16°

km/h

31%

09:00

18°

km/h

29%

10:00

19°

km/h

30%

11:00

19°

km/h

35%

12:00

19°

km/h

39%

13:00

20°

km/h

37%

14:00

20°

km/h

33%

15:00

19°

km/h

37%

Daily forecast

Boulder County air quality index (AQI⁺) forecast

Today

18°

5°

km/h

39%

Mon

16°

9°

km/h

65%

Tue

20°

9°

km/h

61%

Air pollutants

What is the current air quality in Boulder County?

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

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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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

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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 Boulder County today?

Index

Moderate

Tree

Low

25%

Grass

Moderate

50%

Weed

Moderate

50%

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

Moderate

Tree

Low

25%

Grass

Moderate

50%

Weed

Moderate

50%

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	Snead Court	31
2	Willis Heights	31
3	161 Swallow Ln	27
4	Golden Eagle Lode	27
5	Last Chance Court	27
6	Walker Ranch, Pine Needle Notch	27
7	47th Street	26
8	818 Co Rd 116	13

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Stafford, Virginia	74
2	Little Rock, Arkansas	63
3	Jurupa Valley, California	61
4	Des Moines, Iowa	60
5	Santa Clarita, California	60
6	East Los Angeles, California	59
7	El Paso, Texas	59
8	Glendora, California	58
9	Florence-Graham, California	57
10	Huntington Park, California	57

History

Historic air quality graph for Boulder County

27 AQI⁺ US

Good

15:00–16:00 May 31 Local time

AQI⁺ US

History

Historic air quality graph for Boulder County

27 AQI⁺ US

Good

15:00–16:00 May 31 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	Snead Court	31
2	Willis Heights	31
3	161 Swallow Ln	27
4	Golden Eagle Lode	27
5	Last Chance Court	27
6	Walker Ranch, Pine Needle Notch	27
7	47th Street	26
8	818 Co Rd 116	13

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Stafford, Virginia	74
2	Little Rock, Arkansas	63
3	Jurupa Valley, California	61
4	Des Moines, Iowa	60
5	Santa Clarita, California	60
6	East Los Angeles, California	59
7	El Paso, Texas	59
8	Glendora, California	58
9	Florence-Graham, California	57
10	Huntington Park, California	57