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 Johnston
Air quality index (AQI) and PM2.5 air pollution in Johnston
214 people follow this city
Johnston Air Quality Map
Real-time Johnston air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Johnston today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Johnston?
| Weather | Broken clouds |
| Temperature | 60.8°F |
| Humidity | 94% |
| Wind | 8.1 mp/h |
| Pressure | 30.2 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | San Antonio, Texas | 81 |
| 2 | Georgetown, Texas | 79 |
| 3 | Boerne, Texas | 78 |
| 4 | Round Rock, Texas | 76 |
| 5 | Austin, Texas | 75 |
| 6 | Leander, Texas | 72 |
| 7 | Corpus Christi, Texas | 71 |
| 8 | New Braunfels, Texas | 69 |
| 9 | Chapel Hill, North Carolina | 64 |
| 10 | Fort Worth, Texas | 62 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
30*
live AQI index
Good
Overview
What is the current air quality in Johnston?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 30* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 7.2*µg/m³ | |
!
PM2.5
x1.4
PM2.5 concentration in Johnston is currently 1.4 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Johnston?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Johnston air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Good 30 AQI US |  100% | 66.2° 57.2° |  15.7 mp/h |
| Sunday, Apr 28 | Good 21 AQI US | | 57.2° 46.4° | 15.7 mp/h |
| Monday, Apr 29 | Good 12 AQI US | 100% | 77° 44.6° | 17.9 mp/h |
| Tuesday, Apr 30 | Good 24 AQI US | 100% | 68° 51.8° | 15.7 mp/h |
| Wednesday, May 1 | Moderate 62 AQI US  | 100% | 68° 60.8° | 17.9 mp/h |
| Thursday, May 2 | Good 41 AQI US | 100% | 59° 39.2° | 17.9 mp/h |
| Friday, May 3 | Good 15 AQI US | | 59° 41° | 15.7 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
Where is the cleanest air quality in Johnston?
No locations are available.
AQI US, Metric