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Air quality in Longmont

Air quality index (AQI⁺) and PM2.5 air pollution in Longmont • 20.7K Followers • 01:00, Nov 14 Local time

US AQI⁺

Good

Main pollutant:

PM2.5

3.2 µg/m³

5°

7 km/h

53 %

Hourly forecast

Longmont air quality index (AQI⁺) forecast

Now

5°

km/h

53%

02:00

4°

km/h

56%

03:00

4°

km/h

60%

04:00

4°

km/h

82%

05:00

4°

km/h

92%

06:00

3°

km/h

95%

07:00

3°

km/h

96%

08:00

5°

km/h

91%

09:00

6°

km/h

86%

10:00

7°

km/h

75%

11:00

9°

km/h

61%

12:00

10°

km/h

53%

13:00

11°

km/h

47%

14:00

12°

km/h

45%

15:00

12°

km/h

44%

16:00

10°

km/h

51%

17:00

8°

km/h

58%

18:00

6°

km/h

72%

19:00

5°

km/h

75%

20:00

6°

km/h

72%

21:00

5°

km/h

79%

22:00

4°

km/h

81%

23:00

4°

km/h

83%

Sun

00:00

4°

km/h

87%

01:00

3°

km/h

92%

02:00

3°

km/h

95%

03:00

3°

km/h

94%

04:00

2°

km/h

98%

05:00

1°

km/h

99%

06:00

1°

km/h

100%

07:00

1°

km/h

100%

08:00

5°

km/h

95%

09:00

7°

km/h

78%

10:00

9°

km/h

61%

11:00

11°

km/h

48%

12:00

13°

km/h

39%

13:00

14°

km/h

34%

14:00

15°

km/h

32%

15:00

15°

km/h

32%

16:00

13°

km/h

41%

17:00

9°

km/h

59%

18:00

7°

km/h

67%

19:00

6°

km/h

71%

20:00

6°

km/h

69%

21:00

6°

km/h

68%

22:00

6°

km/h

67%

23:00

5°

km/h

66%

Mon

00:00

5°

km/h

65%

01:00

4°

km/h

66%

02:00

4°

km/h

66%

03:00

4°

km/h

67%

04:00

3°

km/h

66%

05:00

3°

km/h

66%

06:00

3°

km/h

66%

07:00

3°

km/h

66%

08:00

7°

km/h

47%

09:00

10°

km/h

35%

10:00

13°

km/h

29%

11:00

15°

km/h

24%

12:00

16°

km/h

21%

13:00

17°

km/h

19%

14:00

18°

km/h

19%

15:00

18°

km/h

20%

16:00

14°

km/h

31%

17:00

10°

km/h

37%

18:00

9°

km/h

44%

19:00

8°

km/h

59%

20:00

8°

km/h

60%

21:00

7°

km/h

61%

22:00

7°

km/h

60%

23:00

7°

km/h

60%

Tue

00:00

6°

km/h

50%

Daily forecast

Longmont air quality index (AQI⁺) forecast

Today

12°

3°

km/h

69%

Sun

15°

1°

km/h

62%

Mon

18°

3°

km/h

41%

Air pollutants

What is the current air quality in Longmont?

PM2.5 concentration currently meets the WHO annual PM2.5 guideline.

Real-time Longmont 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 Longmont

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 Longmont today?

Index

Low

Tree

None

Grass

None

Weed

Low

25%

Source:

wetter.com

Pollen forecast in Longmont

Health recommendations

Enjoy outdoor activities

Open your windows to bring clean, fresh air indoors

Get a monitor

Real-time Longmont air pollution map

Pollen

What is the pollen count in Longmont today?

Index

Low

Tree

None

Grass

None

Weed

Low

25%

Source:

wetter.com

Pollen forecast in Longmont

Protect yourself from air pollution in Longmont

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 Longmont

Worldwide AQI⁺ ranking

Station ranking

Real-time AQI⁺ station ranking for stations in Longmont

#	Stations	AQI⁺ US
1	Longmont	45
2	Longmont Collocation 1	29
3	Clover Basin Consulting	25
4	South Bross Street	25
5	Independence Drive	17
6	Mallard Place	15
7	Hallett Peak	14
8	Longmont Fire Station 3	13
9	Hawthorne Place	12
10	Summerlin Lane	11

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Coeur d'Alene, Idaho	118
2	Country Homes, Washington	97
3	Hamilton, Montana	89
4	Kootenai County, Idaho	88
5	Douglas, Washington	84
6	Leavenworth, Washington	81
7	White Salmon, Washington	81
8	East Wenatchee, Washington	80
9	Hood River, Oregon	79
10	Winthrop, Washington	79

History

Historic air quality graph for Longmont

18 AQI⁺ US

Good

00:00–01:00 Nov 14 Local time

AQI⁺ US

History

Historic air quality graph for Longmont

18 AQI⁺ US

Good

00:00–01:00 Nov 14 Local time

AQI⁺ US

Most polluted locations near Longmont

Worldwide AQI⁺ ranking

Station ranking

Real-time AQI⁺ station ranking for stations in Longmont

#	Stations	AQI⁺ US
1	Longmont	45
2	Longmont Collocation 1	29
3	Clover Basin Consulting	25
4	South Bross Street	25
5	Independence Drive	17
6	Mallard Place	15
7	Hallett Peak	14
8	Longmont Fire Station 3	13
9	Hawthorne Place	12
10	Summerlin Lane	11

City ranking

Real-time USA AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Coeur d'Alene, Idaho	118
2	Country Homes, Washington	97
3	Hamilton, Montana	89
4	Kootenai County, Idaho	88
5	Douglas, Washington	84
6	Leavenworth, Washington	81
7	White Salmon, Washington	81
8	East Wenatchee, Washington	80
9	Hood River, Oregon	79
10	Winthrop, Washington	79