World

Boulder County

Add

Air quality in Boulder County

Air quality index (AQI⁺) and PM2.5 air pollution in Boulder County • 168.5K Followers • 21:00, Sep 19 Local time

US AQI⁺

Good

Main pollutant:

PM2.5

2.1 µg/m³

12°

3 km/h

74 %

Hourly forecast

Boulder County air quality index (AQI⁺) forecast

Now

12°

km/h

74%

22:00

12°

km/h

62%

23:00

12°

km/h

51%

Sun

00:00

11°

km/h

57%

01:00

11°

km/h

59%

02:00

10°

km/h

54%

03:00

10°

km/h

55%

04:00

10°

km/h

56%

05:00

10°

km/h

54%

06:00

9°

km/h

59%

07:00

70%

7°

km/h

67%

08:00

8°

km/h

62%

09:00

10°

km/h

66%

10:00

11°

km/h

59%

11:00

13°

km/h

44%

12:00

15°

km/h

40%

13:00

15°

km/h

40%

14:00

16°

km/h

33%

15:00

16°

km/h

34%

16:00

16°

km/h

32%

17:00

16°

km/h

31%

18:00

15°

km/h

35%

19:00

14°

km/h

39%

20:00

13°

km/h

47%

21:00

11°

km/h

68%

22:00

9°

km/h

78%

23:00

9°

km/h

83%

Mon

00:00

8°

km/h

87%

01:00

8°

km/h

92%

02:00

8°

km/h

92%

03:00

7°

km/h

91%

04:00

7°

km/h

91%

05:00

7°

km/h

85%

06:00

6°

km/h

90%

07:00

6°

km/h

89%

08:00

7°

km/h

80%

09:00

9°

km/h

69%

10:00

10°

km/h

69%

11:00

12°

km/h

66%

12:00

13°

km/h

64%

13:00

13°

km/h

61%

14:00

14°

km/h

57%

15:00

14°

km/h

56%

16:00

14°

km/h

58%

17:00

13°

km/h

64%

18:00

13°

km/h

69%

19:00

11°

km/h

56%

20:00

10°

km/h

57%

21:00

10°

km/h

59%

22:00

9°

km/h

61%

23:00

9°

km/h

62%

Tue

00:00

9°

km/h

62%

01:00

9°

km/h

62%

02:00

8°

km/h

63%

03:00

8°

km/h

62%

04:00

8°

km/h

59%

05:00

8°

km/h

54%

06:00

8°

km/h

49%

07:00

8°

km/h

44%

08:00

11°

km/h

36%

09:00

15°

km/h

26%

10:00

17°

km/h

23%

11:00

19°

km/h

21%

12:00

20°

km/h

21%

13:00

20°

km/h

20%

14:00

21°

km/h

21%

15:00

21°

km/h

22%

16:00

20°

km/h

23%

17:00

20°

km/h

23%

18:00

19°

km/h

27%

19:00

13°

km/h

39%

20:00

13°

km/h

41%

Daily forecast

Boulder County air quality index (AQI⁺) forecast

Today

16°

7°

km/h

49%

Sun

14°

6°

km/h

66%

Mon

21°

8°

km/h

31%

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	47th Street	20
2	Willis Heights	20
3	161 Swallow Ln	13
4	Golden Eagle Lode	13
5	Snead Court	12
6	Eagle Court	11
7	Walker Ranch, Pine Needle Notch	9
8	Rozena Drive	6
9	818 Co Rd 116	5

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Avenal, California	290
2	Crestline, California	112
3	Redlands, California	107
4	Palm Springs, California	106
5	Santa Clarita, California	105
6	Jurupa Valley, California	101
7	San Bernardino County, California	101
8	Hesperia, California	98
9	Wilmette, Illinois	98
10	Cary, Illinois	97

History

Historic air quality graph for Boulder County

12 AQI⁺ US

Good

20:00–21:00 Sep 19 Local time

AQI⁺ US

History

Historic air quality graph for Boulder County

12 AQI⁺ US

Good

20:00–21:00 Sep 19 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	47th Street	20
2	Willis Heights	20
3	161 Swallow Ln	13
4	Golden Eagle Lode	13
5	Snead Court	12
6	Eagle Court	11
7	Walker Ranch, Pine Needle Notch	9
8	Rozena Drive	6
9	818 Co Rd 116	5

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Avenal, California	290
2	Crestline, California	112
3	Redlands, California	107
4	Palm Springs, California	106
5	Santa Clarita, California	105
6	Jurupa Valley, California	101
7	San Bernardino County, California	101
8	Hesperia, California	98
9	Wilmette, Illinois	98
10	Cary, Illinois	97