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 Defiance
Air quality index (AQI) and PM2.5 air pollution in Defiance
9 people follow this city
Defiance Air Quality Map
Real-time Defiance air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Defiance today?
 | Index | Moderate | |
 | Tree pollen | Low | |
 | Grass pollen | Moderate | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Defiance?
| Weather | Broken clouds |
| Temperature | 68°F |
| Humidity | 73% |
| Wind | 3.4 mp/h |
| Pressure | 29.8 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Tulsa, Oklahoma | 111 |
| 2 | Oklahoma City, Oklahoma | 102 |
| 3 | Wichita, Kansas | 97 |
| 4 | Carter Lake, Iowa | 94 |
| 5 | Omaha, Nebraska | 94 |
| 6 | Val Verde, California | 91 |
| 7 | Fort Thompson, South Dakota | 89 |
| 8 | Castaic, California | 88 |
| 9 | Emmetsburg, Iowa | 86 |
| 10 | Fontana, California | 86 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
55*
live AQI index
Moderate
Overview
What is the current air quality in Defiance?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 55* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 11*µg/m³ | |
!
PM2.5
x2.2
PM2.5 concentration in Defiance is currently 2.2 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Defiance?
 | Sensitive groups should reduce outdoor exercise |
 | Close your windows to avoid dirty outdoor air GET A MONITOR |
 | Sensitive groups should wear a mask outdoors GET A MASK |
 | Sensitive groups should run an air purifier GET AN AIR PURIFIER |
Forecast
Defiance air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Moderate 55 AQI US |  100% | 68° 57.2° |  8.9 mp/h |
| Wednesday, May 15 | Moderate 64 AQI US | 80% | 69.8° 53.6° | 11.2 mp/h |
| Thursday, May 16 | Moderate 58 AQI US | 90% | 71.6° 50° | 6.7 mp/h |
| Friday, May 17 | Moderate 58 AQI US | 90% | 73.4° 59° | 4.5 mp/h |
| Saturday, May 18 | Moderate 62 AQI US | 100% | 69.8° 60.8° | 6.7 mp/h |
| Sunday, May 19 | Moderate 78 AQI US | 90% | 71.6° 59° | 8.9 mp/h |
| Monday, May 20 | Good 26 AQI US  | 90% | 73.4° 57.2° | 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?
Where is the cleanest air quality in Defiance?
No locations are available.
AQI US, Metric