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Air quality in Boulder County

Air quality index (AQI⁺) and PM2.5 air pollution in Boulder County • 159.8K Followers • 12:00, May 12 Local time

Milliken AQI Alert nearby

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US AQI⁺

Good

Main pollutant:

O₃

112 µg/m³

17°

9 km/h

35 %

Hourly forecast

Boulder County air quality index (AQI⁺) forecast

Now

17°

km/h

35%

13:00

18°

km/h

32%

14:00

19°

km/h

29%

15:00

18°

km/h

36%

16:00

18°

km/h

41%

17:00

18°

km/h

40%

18:00

17°

km/h

41%

19:00

16°

km/h

42%

20:00

15°

km/h

45%

21:00

14°

km/h

48%

22:00

13°

km/h

51%

23:00

12°

km/h

53%

Wed

00:00

12°

km/h

54%

01:00

11°

km/h

54%

02:00

11°

km/h

48%

03:00

11°

km/h

50%

04:00

11°

km/h

36%

05:00

12°

km/h

27%

06:00

12°

km/h

28%

07:00

13°

km/h

30%

08:00

16°

km/h

36%

09:00

19°

km/h

21%

10:00

21°

km/h

18%

11:00

21°

km/h

21%

12:00

21°

km/h

29%

13:00

21°

km/h

30%

14:00

22°

km/h

26%

15:00

22°

km/h

27%

16:00

23°

km/h

21%

17:00

20°

km/h

23%

18:00

90%

14°

km/h

59%

19:00

18°

km/h

33%

20:00

17°

km/h

36%

21:00

16°

km/h

30%

22:00

15°

km/h

36%

23:00

14°

km/h

36%

Thu

00:00

14°

km/h

36%

01:00

13°

km/h

42%

02:00

13°

km/h

44%

03:00

13°

km/h

44%

04:00

13°

km/h

39%

05:00

12°

km/h

40%

06:00

12°

km/h

42%

07:00

12°

km/h

50%

08:00

12°

km/h

53%

09:00

13°

km/h

44%

10:00

15°

km/h

36%

11:00

17°

km/h

30%

12:00

18°

km/h

24%

13:00

19°

km/h

21%

14:00

19°

km/h

20%

15:00

20°

km/h

18%

16:00

20°

km/h

19%

17:00

19°

km/h

18%

18:00

18°

km/h

15%

19:00

17°

km/h

13%

20:00

13°

km/h

17%

21:00

11°

km/h

20%

22:00

10°

km/h

26%

23:00

8°

km/h

30%

Fri

00:00

8°

km/h

31%

01:00

7°

km/h

31%

02:00

7°

km/h

33%

03:00

6°

km/h

34%

04:00

5°

km/h

34%

05:00

5°

km/h

33%

06:00

5°

km/h

33%

07:00

7°

km/h

28%

08:00

12°

km/h

17%

09:00

14°

km/h

15%

10:00

15°

km/h

14%

11:00

17°

km/h

12%

Daily forecast

Boulder County air quality index (AQI⁺) forecast

Today

19°

8°

km/h

42%

Wed

23°

12°

km/h

30%

Thu

20°

10°

km/h

27%

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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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.

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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

Low

Tree Low	25%
Grass None	0%
Weed None	0%

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 None	0%
Weed None	0%

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	5555 Valmont Rd	32
2	5667-5557 Valmont Rd	32
3	32-16 Flamingo Dr	31
4	5699-5669 Valmont Rd	31
5	161 Swallow Ln	29
6	5668-5698 Valmont Rd	29
7	5875-5817 Valmont Rd	29
8	Golden Eagle Lode	29
9	5771-5701 Valmont Rd	28
10	47th Street	22

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Altadena, California	100
2	Pasadena, California	98
3	Claremont, California	95
4	Glendora, California	94
5	La Crescenta-Montrose, California	93
6	La Verne, California	89
7	La Cañada Flintridge, California	86
8	Highland, California	85
9	Rancho Cucamonga, California	84
10	Glendale, California	83

History

Historic air quality graph for Boulder County

27 AQI⁺ US

Good

11:00–12:00 May 12 Local time

AQI⁺ US

History

Historic air quality graph for Boulder County

27 AQI⁺ US

Good

11:00–12:00 May 12 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	5555 Valmont Rd	32
2	5667-5557 Valmont Rd	32
3	32-16 Flamingo Dr	31
4	5699-5669 Valmont Rd	31
5	161 Swallow Ln	29
6	5668-5698 Valmont Rd	29
7	5875-5817 Valmont Rd	29
8	Golden Eagle Lode	29
9	5771-5701 Valmont Rd	28
10	47th Street	22

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Altadena, California	100
2	Pasadena, California	98
3	Claremont, California	95
4	Glendora, California	94
5	La Crescenta-Montrose, California	93
6	La Verne, California	89
7	La Cañada Flintridge, California	86
8	Highland, California	85
9	Rancho Cucamonga, California	84
10	Glendale, California	83