Be the first to measure and contribute air quality data to your community
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Union
Air quality index (AQI) and PM2.5 air pollution in Union
32 people follow this city
Union Air Quality Map
Real-time Union air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Union today?
 | Index | High | |
 | Tree pollen | High | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Union?
| Weather | Broken clouds |
| Temperature | 48.2°F |
| Humidity | 88% |
| Wind | 0 mp/h |
| Pressure | 30.2 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Boerne, Texas | 80 |
| 2 | San Antonio, Texas | 76 |
| 3 | Braddock, Pennsylvania | 62 |
| 4 | Fort Worth, Texas | 59 |
| 5 | Charleston, West Virginia | 58 |
| 6 | Urbana, Illinois | 58 |
| 7 | Champaign, Illinois | 56 |
| 8 | Corpus Christi, Texas | 56 |
| 9 | Marietta, Ohio | 56 |
| 10 | McKeesport, Pennsylvania | 56 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
17*
live AQI index
Good
Overview
What is the current air quality in Union?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 17* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 4.2*µg/m³ | |
✓
PM2.5 concentration in Union air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Union?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Union air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Good 17 AQI US |  50% | 77° 48.2° |  6.7 mp/h |
| Monday, Apr 29 | Good 48 AQI US |  | 82.4° 60.8° | 6.7 mp/h |
| Tuesday, Apr 30 | Moderate 54 AQI US  | 100% | 69.8° 55.4° | 8.9 mp/h |
| Wednesday, May 1 | Good 49 AQI US | | 60.8° 51.8° | 6.7 mp/h |
| Thursday, May 2 | Good 38 AQI US | | 66.2° 48.2° | 8.9 mp/h |
| Friday, May 3 | Good 19 AQI US | 40% | 71.6° 51.8° | 6.7 mp/h |
| Saturday, May 4 | Good 27 AQI US | 100% | 57.2° 50° | 6.7 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
Where is the cleanest air quality in Union?
No locations are available.
AQI US, Metric