World

Boulder County

Add

Air quality in Boulder County

Air quality index (AQI⁺) and PM2.5 air pollution in Boulder County • 160.5K Followers • 20:00, May 29 Local time

Milliken AQI Alert nearby

View alert

US AQI⁺

Good

Main pollutant:

PM2.5

3.3 µg/m³

12°

10 km/h

78 %

Hourly forecast

Boulder County air quality index (AQI⁺) forecast

Now

12°

km/h

78%

21:00

11°

km/h

84%

22:00

90%

10°

km/h

93%

23:00

10°

km/h

85%

Sat

00:00

10°

km/h

91%

01:00

10°

km/h

75%

02:00

10°

km/h

59%

03:00

8°

km/h

56%

04:00

8°

km/h

57%

05:00

7°

km/h

58%

06:00

6°

km/h

60%

07:00

7°

km/h

56%

08:00

9°

km/h

48%

09:00

10°

km/h

42%

10:00

11°

km/h

30%

11:00

13°

km/h

28%

12:00

14°

km/h

26%

13:00

15°

km/h

24%

14:00

16°

km/h

27%

15:00

16°

km/h

27%

16:00

16°

km/h

25%

17:00

13°

km/h

38%

18:00

12°

km/h

47%

19:00

11°

km/h

48%

20:00

9°

km/h

53%

21:00

8°

km/h

50%

22:00

8°

km/h

49%

23:00

9°

km/h

48%

Sun

00:00

8°

km/h

51%

01:00

8°

km/h

48%

02:00

8°

km/h

53%

03:00

7°

km/h

57%

04:00

7°

km/h

57%

05:00

7°

km/h

57%

06:00

7°

km/h

59%

07:00

8°

km/h

57%

08:00

10°

km/h

53%

09:00

11°

km/h

51%

10:00

13°

km/h

43%

11:00

14°

km/h

38%

12:00

15°

km/h

32%

13:00

16°

km/h

31%

14:00

17°

km/h

29%

15:00

17°

km/h

35%

16:00

17°

km/h

32%

17:00

18°

km/h

24%

18:00

18°

km/h

25%

19:00

17°

km/h

25%

20:00

13°

km/h

32%

21:00

12°

km/h

35%

22:00

11°

km/h

36%

23:00

10°

km/h

38%

Mon

00:00

10°

km/h

37%

01:00

9°

km/h

39%

02:00

8°

km/h

42%

03:00

8°

km/h

42%

04:00

7°

km/h

43%

05:00

7°

km/h

49%

06:00

7°

km/h

47%

07:00

10°

km/h

39%

08:00

13°

km/h

31%

09:00

14°

km/h

29%

10:00

16°

km/h

27%

11:00

17°

km/h

24%

12:00

16°

km/h

27%

13:00

90%

15°

km/h

37%

14:00

90%

12°

km/h

67%

15:00

17°

km/h

33%

16:00

19°

km/h

26%

17:00

18°

km/h

33%

18:00

16°

km/h

36%

19:00

13°

km/h

59%

Daily forecast

Boulder County air quality index (AQI⁺) forecast

Today

16°

6°

km/h

40%

Sat

18°

7°

km/h

37%

Sun

19°

7°

km/h

42%

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

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	5668-5698 Valmont Rd	36
2	32-16 Flamingo Dr	23
3	5699-5669 Valmont Rd	20
4	161 Swallow Ln	19
5	5555 Valmont Rd	18
6	5771-5701 Valmont Rd	18
7	818 Co Rd 116	17
8	47th Street	16
9	5667-5557 Valmont Rd	16
10	5875-5817 Valmont Rd	13

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Avenal, California	117
2	Calexico, California	75
3	Duchesne County, Utah	69
4	Cook, Illinois	65
5	Chicago, Illinois	61
6	Fort Wayne, Indiana	60
7	Middletown, Ohio	60
8	Wilson County, Tennessee	60
9	Columbus, Ohio	59
10	Lemont, Illinois	59

History

Historic air quality graph for Boulder County

18 AQI⁺ US

Good

19:00–20:00 May 29 Local time

AQI⁺ US

History

Historic air quality graph for Boulder County

18 AQI⁺ US

Good

19:00–20:00 May 29 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	5668-5698 Valmont Rd	36
2	32-16 Flamingo Dr	23
3	5699-5669 Valmont Rd	20
4	161 Swallow Ln	19
5	5555 Valmont Rd	18
6	5771-5701 Valmont Rd	18
7	818 Co Rd 116	17
8	47th Street	16
9	5667-5557 Valmont Rd	16
10	5875-5817 Valmont Rd	13

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Avenal, California	117
2	Calexico, California	75
3	Duchesne County, Utah	69
4	Cook, Illinois	65
5	Chicago, Illinois	61
6	Fort Wayne, Indiana	60
7	Middletown, Ohio	60
8	Wilson County, Tennessee	60
9	Columbus, Ohio	59
10	Lemont, Illinois	59