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 Herndon
Air quality index (AQI) and PM2.5 air pollution in Herndon
2K people follow this city
Herndon Air Quality Map
Real-time Herndon air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Herndon today?
 | Index | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Weather
What is the current weather in Herndon?
| Weather | Broken clouds |
| Temperature | 53.6°F |
| Humidity | 77% |
| Wind | 9.2 mp/h |
| Pressure | 30.1 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Porterville, California | 80 |
| 2 | Sequoia National Park, California | 80 |
| 3 | Three Rivers, California | 80 |
| 4 | Casa Grande, Arizona | 73 |
| 5 | Springville, California | 73 |
| 6 | Reston, Virginia | 63 |
| 7 | Frederick, Maryland | 61 |
| 8 | Cockeysville, Maryland | 60 |
| 9 | Kamiah, Idaho | 60 |
| 10 | Fairfax, Virginia | 59 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
36*
live AQI index
Good
Overview
What is the current air quality in Herndon?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 36* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 8.7*µg/m³ | |
!
PM2.5
x1.7
PM2.5 concentration in Herndon is currently 1.7 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Herndon?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Herndon air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Good 36 AQI US |  60% | 68° 46.4° |  8.9 mp/h |
| Saturday, Apr 20 | Good 40 AQI US | | 62.6° 46.4° | 13.4 mp/h |
| Sunday, Apr 21 | Good 11 AQI US | | 57.2° 39.2° | 8.9 mp/h |
| Monday, Apr 22 | Good 18 AQI US |  | 60.8° 41° | 4.5 mp/h |
| Tuesday, Apr 23 | Good 15 AQI US |  | 68° 42.8° | 11.2 mp/h |
| Wednesday, Apr 24 | Good 30 AQI US | 90% | 60.8° 39.2° | 15.7 mp/h |
| Thursday, Apr 25 | Good 26 AQI US | | 55.4° 32° | 11.2 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
Where is the cleanest air quality in Herndon?
No locations are available.
AQI US, Metric