World

Boulder County

Add

Air quality in Boulder County

Air quality index (AQI⁺) and PM2.5 air pollution in Boulder County • 168.5K Followers • 05:00, Sep 21 Local time

US AQI⁺

Good

Main pollutant:

PM2.5

2.8 µg/m³

7°

2 km/h

92 %

Hourly forecast

Boulder County air quality index (AQI⁺) forecast

Now

7°

km/h

92%

07:00

7°

km/h

88%

08:00

8°

km/h

81%

09:00

9°

km/h

77%

10:00

10°

km/h

84%

11:00

11°

km/h

81%

12:00

12°

km/h

75%

13:00

12°

km/h

76%

14:00

13°

km/h

67%

15:00

14°

km/h

65%

16:00

14°

km/h

63%

17:00

13°

km/h

65%

18:00

13°

km/h

66%

19:00

13°

km/h

69%

20:00

12°

km/h

73%

21:00

12°

km/h

77%

22:00

11°

km/h

80%

23:00

11°

km/h

80%

Tue

00:00

11°

km/h

85%

01:00

10°

km/h

89%

02:00

10°

km/h

92%

03:00

9°

km/h

94%

04:00

9°

km/h

93%

05:00

9°

km/h

91%

06:00

9°

km/h

91%

07:00

9°

km/h

81%

08:00

10°

km/h

71%

09:00

13°

km/h

59%

10:00

14°

km/h

57%

11:00

16°

km/h

56%

12:00

17°

km/h

48%

13:00

18°

km/h

57%

14:00

18°

km/h

57%

15:00

17°

km/h

51%

16:00

17°

km/h

48%

17:00

17°

km/h

45%

18:00

17°

km/h

45%

19:00

17°

km/h

44%

20:00

16°

km/h

48%

21:00

16°

km/h

46%

22:00

15°

km/h

49%

23:00

15°

km/h

50%

Wed

00:00

14°

km/h

50%

01:00

13°

km/h

57%

02:00

13°

km/h

61%

03:00

13°

km/h

56%

04:00

12°

km/h

55%

05:00

12°

km/h

58%

06:00

12°

km/h

59%

07:00

10°

km/h

57%

08:00

12°

km/h

52%

09:00

14°

km/h

41%

10:00

16°

km/h

39%

11:00

16°

km/h

40%

12:00

17°

km/h

37%

13:00

17°

km/h

36%

14:00

16°

km/h

38%

15:00

17°

km/h

38%

16:00

16°

km/h

42%

17:00

15°

km/h

46%

18:00

13°

km/h

63%

19:00

12°

km/h

65%

20:00

12°

km/h

62%

21:00

12°

km/h

63%

22:00

11°

km/h

61%

23:00

11°

km/h

61%

Thu

00:00

11°

km/h

60%

01:00

10°

km/h

60%

02:00

10°

km/h

58%

03:00

11°

km/h

56%

04:00

10°

km/h

58%

05:00

10°

km/h

58%

Daily forecast

Boulder County air quality index (AQI⁺) forecast

Today

14°

7°

km/h

75%

Tue

18°

9°

km/h

56%

Wed

17°

10°

km/h

49%

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

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

Pollen

What is the pollen count in Boulder County today?

Index

Moderate

Tree

None

Grass

None

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

None

Grass

None

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	818 Co Rd 116	23
2	Willis Heights	22
3	161 Swallow Ln	17
4	Rozena Drive	17
5	Walker Ranch, Pine Needle Notch	16
6	Snead Court	14
7	Golden Eagle Lode	13
8	47th Street	12
9	Rabbit Mountain Equestrian Center	11
10	Eagle Court	9

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Chelan, Washington	131
2	Hesperia, California	71
3	Chattanooga, Tennessee	68
4	Napa, California	66
5	Jurupa Valley, California	65
6	Memphis, Tennessee	63
7	Glendora, California	62
8	La Crescenta-Montrose, California	61
9	Rancho Cucamonga, California	61
10	Washington County, Kentucky	61

History

Historic air quality graph for Boulder County

16 AQI⁺ US

Good

04:00–05:00 Sep 21 Local time

AQI⁺ US

History

Historic air quality graph for Boulder County

16 AQI⁺ US

Good

04:00–05:00 Sep 21 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	23
2	Willis Heights	22
3	161 Swallow Ln	17
4	Rozena Drive	17
5	Walker Ranch, Pine Needle Notch	16
6	Snead Court	14
7	Golden Eagle Lode	13
8	47th Street	12
9	Rabbit Mountain Equestrian Center	11
10	Eagle Court	9

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Chelan, Washington	131
2	Hesperia, California	71
3	Chattanooga, Tennessee	68
4	Napa, California	66
5	Jurupa Valley, California	65
6	Memphis, Tennessee	63
7	Glendora, California	62
8	La Crescenta-Montrose, California	61
9	Rancho Cucamonga, California	61
10	Washington County, Kentucky	61