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Air quality in Boulder
Air quality index (AQI) and PM2.5 air pollution in Boulder
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Boulder Air Quality Map
Real-time Boulder air pollution map
AIR QUALITY DATA CONTRIBUTORS
32 Contributors
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Pollen
What is the pollen count in Boulder today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Boulder?
| Weather | Clear sky |
| Temperature | 51.8°F |
| Humidity | 58% |
| Wind | 3.4 mp/h |
| Pressure | 29.8 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Baton Rouge, Louisiana | 64 |
| 2 | Casa Grande, Arizona | 59 |
| 3 | Columbus, Ohio | 56 |
| 4 | Marana, Arizona | 55 |
| 5 | Upper Arlington, Ohio | 55 |
| 6 | Detroit, Michigan | 53 |
| 7 | Manila, Utah | 52 |
| 8 | Birmingham, Alabama | 46 |
| 9 | Corpus Christi, Texas | 45 |
| 10 | Bryson City, North Carolina | 44 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Boulder aqi ranking
Real-time Boulder air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Boulder - CU - 2102 Athens St. | 25 |
| 2 | Boulder Reservoir | 24 |
| 3 | Norlin Library | 21 |
| 4 | Dartmouth Avenue | 16 |
| 5 | 10th Street | 15 |
| 6 | 700 Walnut Street | 15 |
| 7 | Canyon Pointe Park | 15 |
| 8 | Grape Avenue | 15 |
| 9 | Grove Street | 15 |
| 10 | Hawk Lane | 15 |
(local time)
SEE WORLD AQI RANKING
US AQI
25
live AQI index
Good
Overview
What is the current air quality in Boulder?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 25 US AQI | O3 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 3.2µg/m³ | |
| PM10 | 12µg/m³ | |
| O3 | 60µg/m³ | |
✓
PM2.5 concentration in Boulder air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Boulder?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Boulder air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Thursday, May 2 | Good 33 AQI US | | 68° 39.2° |  22.4 mp/h |
| Friday, May 3 | Good 33 AQI US |  | 62.6° 32° | 8.9 mp/h |
| Saturday, May 4 | Good 30 AQI US |  | 75.2° 44.6° | 20.1 mp/h |
| Today | Good 25 AQI US | | 75.2° 44.6° | 20.1 mp/h |
| Monday, May 6 | Good 8 AQI US |  50% | 55.4° 41° | 47 mp/h |
| Tuesday, May 7 | Good 5 AQI US |  50% | 51.8° 33.8° | 20.1 mp/h |
| Wednesday, May 8 | Good 5 AQI US | | 51.8° 32° | 22.4 mp/h |
| Thursday, May 9 | Good 4 AQI US | 70% | 50° 37.4° | 6.7 mp/h |
| Friday, May 10 | Good 4 AQI US | 90% | 50° 41° | 2.2 mp/h |
| Saturday, May 11 | Good 5 AQI US | 80% | 53.6° 42.8° | 4.5 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Boulder air quality data attribution
32Contributors
Government Contributor
- Russ Stewart
1 station
- kleinp
1 station
2 Individual Contributors
- 29 Anonymous contributors
29 stations
29 Anonymous Contributors
Data validated and calibrated by IQAirWhere is the cleanest air quality in Boulder?
- Gillaspie Dr 4
- 47th Street 8
- Redwood & Riverside 8
- Keewayden 9
- North Boulder 9
- Rural North Boulder 9
- University Hill 10
- Boulder Station 11
- Concord Ave 11
- Frontage Road 11
- Kalmia Avenue 11
- Shining Mountain Waldorf School 11
- Hawthorn Avenue 12
- Table Mesa Court 12
- Bean Mountain Lane 13
- Flagstaff Road 13
- Walker Ranch, Pine Needle Notch 13
- Chautauqua Heights, Cascade Avenue 14
- Kincross Way 14
- South 42nd Street 14
- Winds II, Valmont & 29th 14
- 10th Street 15
- 700 Walnut Street 15
- Canyon Pointe Park 15
- Grape Avenue 15
- Grove Street 15
- Hawk Lane 15
- Miami Way 15
- Stony Hill Road 15
- Dartmouth Avenue 16
- Norlin Library 21
- Boulder Reservoir 24
- Boulder - CU - 2102 Athens St. 25
AQI US, Metric