Air quality in Boulder

Air quality index (AQI⁺) and PM2.5 air pollution in Boulder • 437 Followers • 19:00, Apr 20 Local time

42

US AQI⁺

Good

face expression based on aqi value

Main pollutant:

PM2.5

7.7 µg/m³

weather condition icon

20°

wind direction icon

9 km/h

weather humid icon

20 %

Hourly forecast

Boulder air quality index (AQI⁺) forecast

Now

42

Weather icon

20°

IQAir AirVisual Air Quality Map Wind rotating 253 degree

9

km/h

Humidity icon

20%

20:00

40

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 297 degree

7

km/h

Humidity icon

24%

21:00

38

Weather icon

16°

IQAir AirVisual Air Quality Map Wind rotating 327 degree

8

km/h

Humidity icon

27%

22:00

36

Weather icon

15°

IQAir AirVisual Air Quality Map Wind rotating 328 degree

6

km/h

Humidity icon

27%

23:00

33

Weather icon

15°

IQAir AirVisual Air Quality Map Wind rotating 290 degree

5

km/h

Humidity icon

28%

Tue

00:00

32

Weather icon

13°

IQAir AirVisual Air Quality Map Wind rotating 291 degree

6

km/h

Humidity icon

32%

01:00

31

Weather icon

12°

IQAir AirVisual Air Quality Map Wind rotating 298 degree

7

km/h

Humidity icon

35%

02:00

29

Weather icon

12°

IQAir AirVisual Air Quality Map Wind rotating 303 degree

6

km/h

Humidity icon

36%

03:00

29

Weather icon

11°

IQAir AirVisual Air Quality Map Wind rotating 308 degree

6

km/h

Humidity icon

37%

04:00

27

Weather icon

11°

IQAir AirVisual Air Quality Map Wind rotating 302 degree

5

km/h

Humidity icon

38%

05:00

25

Weather icon

11°

IQAir AirVisual Air Quality Map Wind rotating 312 degree

5

km/h

Humidity icon

37%

06:00

28

Weather icon

10°

IQAir AirVisual Air Quality Map Wind rotating 318 degree

5

km/h

Humidity icon

37%

07:00

27

Weather icon

10°

IQAir AirVisual Air Quality Map Wind rotating 315 degree

4

km/h

Humidity icon

36%

08:00

27

Weather icon

12°

IQAir AirVisual Air Quality Map Wind rotating 307 degree

3

km/h

Humidity icon

37%

09:00

28

Weather icon

14°

IQAir AirVisual Air Quality Map Wind rotating 210 degree

1

km/h

Humidity icon

31%

10:00

28

Weather icon

16°

IQAir AirVisual Air Quality Map Wind rotating 163 degree

3

km/h

Humidity icon

31%

11:00

28

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 150 degree

8

km/h

Humidity icon

29%

12:00

24

Weather icon

20°

IQAir AirVisual Air Quality Map Wind rotating 154 degree

14

km/h

Humidity icon

26%

13:00

24

Weather icon

22°

IQAir AirVisual Air Quality Map Wind rotating 166 degree

20

km/h

Humidity icon

25%

14:00

24

Weather icon

23°

IQAir AirVisual Air Quality Map Wind rotating 170 degree

22

km/h

Humidity icon

23%

15:00

19

Weather icon

23°

IQAir AirVisual Air Quality Map Wind rotating 175 degree

31

km/h

Humidity icon

20%

16:00

19

Weather icon

23°

IQAir AirVisual Air Quality Map Wind rotating 176 degree

30

km/h

Humidity icon

20%

17:00

19

Weather icon

22°

IQAir AirVisual Air Quality Map Wind rotating 177 degree

29

km/h

Humidity icon

20%

18:00

18

Weather icon

21°

IQAir AirVisual Air Quality Map Wind rotating 176 degree

26

km/h

Humidity icon

22%

19:00

18

Weather icon

20°

IQAir AirVisual Air Quality Map Wind rotating 173 degree

20

km/h

Humidity icon

25%

20:00

18

Weather icon

18°

IQAir AirVisual Air Quality Map Wind rotating 164 degree

15

km/h

Humidity icon

29%

21:00

21

Weather icon

17°

IQAir AirVisual Air Quality Map Wind rotating 175 degree

13

km/h

Humidity icon

28%

22:00

21

Weather icon

16°

IQAir AirVisual Air Quality Map Wind rotating 180 degree

9

km/h

Humidity icon

28%

23:00

21

Weather icon

15°

IQAir AirVisual Air Quality Map Wind rotating 169 degree

6

km/h

Humidity icon

31%

Wed

00:00

24

Weather icon

13°

IQAir AirVisual Air Quality Map Wind rotating 168 degree

5

km/h

Humidity icon

36%

01:00

24

Weather icon

12°

IQAir AirVisual Air Quality Map Wind rotating 170 degree

5

km/h

Humidity icon

41%

02:00

24

Weather icon

11°

IQAir AirVisual Air Quality Map Wind rotating 189 degree

3

km/h

Humidity icon

44%

03:00

24

Weather icon

10°

IQAir AirVisual Air Quality Map Wind rotating 188 degree

4

km/h

Humidity icon

48%

04:00

24

Weather icon

10°

IQAir AirVisual Air Quality Map Wind rotating 191 degree

4

km/h

Humidity icon

50%

05:00

24

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 197 degree

2

km/h

Humidity icon

54%

06:00

22

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 216 degree

3

km/h

Humidity icon

53%

07:00

22

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 163 degree

4

km/h

Humidity icon

57%

08:00

22

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 171 degree

9

km/h

Humidity icon

54%

09:00

19

Weather icon

12°

IQAir AirVisual Air Quality Map Wind rotating 207 degree

20

km/h

Humidity icon

44%

10:00

19

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 180 degree

20

km/h

Humidity icon

64%

11:00

19

Weather icon

11°

IQAir AirVisual Air Quality Map Wind rotating 176 degree

30

km/h

Humidity icon

56%

12:00

18

Weather icon

12°

IQAir AirVisual Air Quality Map Wind rotating 180 degree

28

km/h

Humidity icon

45%

13:00

18

Weather icon

11°

IQAir AirVisual Air Quality Map Wind rotating 252 degree

38

km/h

Humidity icon

58%

14:00

18

Weather icon

90%

10°

IQAir AirVisual Air Quality Map Wind rotating 246 degree

24

km/h

Humidity icon

59%

15:00

9

Weather icon

10°

IQAir AirVisual Air Quality Map Wind rotating 264 degree

29

km/h

Humidity icon

49%

16:00

9

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 272 degree

31

km/h

Humidity icon

54%

17:00

9

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 268 degree

30

km/h

Humidity icon

51%

18:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 270 degree

27

km/h

Humidity icon

54%

19:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 296 degree

16

km/h

Humidity icon

48%

20:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 313 degree

24

km/h

Humidity icon

52%

21:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 312 degree

24

km/h

Humidity icon

57%

22:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 304 degree

20

km/h

Humidity icon

60%

23:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 317 degree

17

km/h

Humidity icon

66%

Thu

00:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 306 degree

17

km/h

Humidity icon

69%

01:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 293 degree

18

km/h

Humidity icon

61%

02:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 294 degree

16

km/h

Humidity icon

65%

03:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 281 degree

15

km/h

Humidity icon

73%

04:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 291 degree

17

km/h

Humidity icon

74%

05:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 299 degree

17

km/h

Humidity icon

76%

06:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 306 degree

13

km/h

Humidity icon

82%

07:00

6

Weather icon

90%

IQAir AirVisual Air Quality Map Wind rotating 323 degree

19

km/h

Humidity icon

72%

08:00

6

Weather icon

-1°

IQAir AirVisual Air Quality Map Wind rotating 329 degree

18

km/h

Humidity icon

57%

09:00

6

Weather icon

-1°

IQAir AirVisual Air Quality Map Wind rotating 332 degree

18

km/h

Humidity icon

53%

10:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 345 degree

17

km/h

Humidity icon

48%

11:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 344 degree

19

km/h

Humidity icon

44%

12:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 345 degree

16

km/h

Humidity icon

41%

13:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 352 degree

13

km/h

Humidity icon

38%

14:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 346 degree

15

km/h

Humidity icon

39%

15:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 347 degree

17

km/h

Humidity icon

39%

16:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 346 degree

17

km/h

Humidity icon

39%

17:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 6 degree

22

km/h

Humidity icon

40%

18:00

6

Weather icon

IQAir AirVisual Air Quality Map Wind rotating 11 degree

26

km/h

Humidity icon

46%

Daily forecast

|

Boulder air quality index (AQI⁺) forecast

Today

24

Weather icon

23°

10°

IQAir AirVisual Air Quality Map Wind rotating 180 degree

31

km/h

Humidity icon

27%

Tue

20

Weather icon

12°

IQAir AirVisual Air Quality Map Wind rotating 180 degree

38

km/h

Humidity icon

54%

Wed

6

Weather icon

-3°

IQAir AirVisual Air Quality Map Wind rotating 0 degree

26

km/h

Humidity icon

49%

Air pollutants

What is the current air quality in Boulder?

IQAir exclamation icon

PM2.5 concentration is currently 1.5 times the World Health Organization annual PM2.5 guideline value.

Health recommendations

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Enjoy outdoor activities

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Open your windows to bring clean, fresh air indoors

Get a monitor

Protect yourself from air pollution in Boulder

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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

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

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Pollen

What is the pollen count in Boulder today?

Index

Pollen global icon

Low

Pollen tree icon

Tree

Low

25%
Pollen grass icon

Grass

None

0%
Pollen weed icon

Weed

None

0%

Source:

wetter.com
Pollen forecast in Boulder

Health recommendations

common.healthRecommendationComp.icons.exerciseAlt

Enjoy outdoor activities

common.healthRecommendationComp.icons.windowAlt

Open your windows to bring clean, fresh air indoors

Get a monitor

Pollen

What is the pollen count in Boulder today?

Index

Pollen global icon

Low

Pollen tree icon

Tree

Low

25%
Pollen grass icon

Grass

None

0%
Pollen weed icon

Weed

None

0%

Source:

wetter.com
Pollen forecast in Boulder

Protect yourself from air pollution in Boulder

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

Worldwide AQI⁺ rankingArrow icon

Station ranking

Real-time AQI⁺ station ranking for stations in Boulder

#StationsAQI⁺ US
1
The national flag of USA

100-198 E 4th Ave

42

City ranking

Real-time USA AQI⁺ city ranking

#CitiesAQI⁺ US
1
The national flag of USA

Avenal, California

83

2
The national flag of USA

Superior Village, Wisconsin

74

3
The national flag of USA

Anaheim, California

67

4
The national flag of USA

Pahrump, Nevada

66

5
The national flag of USA

Kamiah, Idaho

64

6
The national flag of USA

Crestline, California

63

7
The national flag of USA

Evergreen, Colorado

63

8
The national flag of USA

Centennial, Colorado

61

9
The national flag of USA

Victorville, California

61

10
The national flag of USA

Glendora, California

60

History

Historic air quality graph for Boulder

42 AQI⁺ US
Good
18:00–19:00 Apr 20 Local time
AQI⁺ US

History

Historic air quality graph for Boulder

42 AQI⁺ US
Good
18:00–19:00 Apr 20 Local time
AQI⁺ US

Most polluted locations near Boulder

Worldwide AQI⁺ rankingArrow icon

Station ranking

Real-time AQI⁺ station ranking for stations in Boulder

#StationsAQI⁺ US
1
The national flag of USA

100-198 E 4th Ave

42

City ranking

Real-time USA AQI⁺ city ranking

#CitiesAQI⁺ US
1
The national flag of USA

Avenal, California

83

2
The national flag of USA

Superior Village, Wisconsin

74

3
The national flag of USA

Anaheim, California

67

4
The national flag of USA

Pahrump, Nevada

66

5
The national flag of USA

Kamiah, Idaho

64

6
The national flag of USA

Crestline, California

63

7
The national flag of USA

Evergreen, Colorado

63

8
The national flag of USA

Centennial, Colorado

61

9
The national flag of USA

Victorville, California

61

10
The national flag of USA

Glendora, California

60

Measure your own air quality

Get a monitor and contribute air quality data in your city.

Where is the cleanest air quality in Boulder?