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Air quality in Longmont
Air quality index (AQI) and PM2.5 air pollution in Longmont
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Longmont Air Quality Map
Real-time Longmont air pollution map
AIR QUALITY DATA CONTRIBUTORS
17 Contributors
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Pollen
What is the pollen count in Longmont today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Longmont?
| Weather | Clear sky |
| Temperature | 50°F |
| Humidity | 81% |
| Wind | 3.4 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Claremont, California | 83 |
| 2 | Redlands, California | 81 |
| 3 | Glendora, California | 80 |
| 4 | San Fernando, California | 79 |
| 5 | Glendale, California | 78 |
| 6 | Pasadena, California | 78 |
| 7 | San Bernardino, California | 78 |
| 8 | Coachella, California | 77 |
| 9 | North Hollywood, California | 77 |
| 10 | Alhambra, California | 75 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Longmont aqi ranking
Real-time Longmont air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Ute Creek Drive | 54 |
| 2 | Longmont Station | 43 |
| 3 | Caleta Trail | 41 |
| 4 | South Bross Street | 38 |
| 5 | Willis Heights | 38 |
| 6 | Preston Drive | 37 |
| 7 | Hallett Peak | 35 |
| 8 | Rozena Drive | 30 |
| 9 | Clover Basin Consulting | 27 |
| 10 | Mallard Place | 27 |
(local time)
SEE WORLD AQI RANKING
US AQI
33
live AQI index
Good
Overview
What is the current air quality in Longmont?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 33 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 5.9µg/m³ | |
!
PM2.5
x1.2
PM2.5 concentration in Longmont is currently 1.2 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Longmont?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Longmont air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, May 29 | Good 23 AQI US |  | 77° 51.8° |  22.4 mp/h |
| Thursday, May 30 | Good 22 AQI US | | 69.8° 46.4° | 8.9 mp/h |
| Friday, May 31 | Good 35 AQI US |  | 82.4° 50° | 13.4 mp/h |
| Today | Good 33 AQI US | | 82.4° 50° | 13.4 mp/h |
| Sunday, Jun 2 | Good 33 AQI US |  | 86° 51.8° | 22.4 mp/h |
| Monday, Jun 3 | Moderate 57 AQI US  | | 87.8° 55.4° | 11.2 mp/h |
| Tuesday, Jun 4 | Good 20 AQI US | | 82.4° 59° | 13.4 mp/h |
| Wednesday, Jun 5 | Good 19 AQI US | | 89.6° 55.4° | 4.5 mp/h |
| Thursday, Jun 6 | Good 21 AQI US | | 82.4° 53.6° | 11.2 mp/h |
| Friday, Jun 7 | Good 43 AQI US | 90% | 86° 57.2° | 8.9 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Longmont air quality data attribution
17Contributors
Government Contributor
- Anonymous
1 station
Educational Contributor
- John Baum
1 station
Individual Contributor
- 14 Anonymous contributors
14 stations
14 Anonymous Contributors
Data validated and calibrated by IQAirWhere is the cleanest air quality in Longmont?
- Eagle Court 6
- Summerlin Lane 13
- Rabbit Mountain Equestrian Center 23
- Bluebird Avenue 24
- Hawthorne Place 25
- Snead Court 26
- The Shores 26
- Clover Basin Consulting 27
- Mallard Place 27
- Rozena Drive 30
- Hallett Peak 35
- Preston Drive 37
- South Bross Street 38
- Willis Heights 38
- Caleta Trail 41
- Longmont Station 43
- Ute Creek Drive 54
AQI US, Metric