Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Johnstown
Air quality index (AQI) and PM2.5 air pollution in Johnstown
421 people follow this city
Johnstown Air Quality Map
Real-time Johnstown air pollution map
AIR QUALITY DATA CONTRIBUTORS
Pennsylvania Department of Environmental Protection (Pennsylvania DEP)
See all
Pollen
What is the pollen count in Johnstown today?
 | Index | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Johnstown?
| Weather | Clear sky |
| Temperature | 64.4°F |
| Humidity | 67% |
| Wind | 5.7 mp/h |
| Pressure | 30.2 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Boerne, Texas | 96 |
| 2 | Austin, Texas | 87 |
| 3 | New Braunfels, Texas | 84 |
| 4 | San Antonio, Texas | 81 |
| 5 | Georgetown, Texas | 79 |
| 6 | Cedar Park, Texas | 77 |
| 7 | Round Rock, Texas | 73 |
| 8 | Pahrump, Nevada | 71 |
| 9 | Leander, Texas | 70 |
| 10 | San Fernando, California | 70 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Johnstown aqi ranking
Real-time Johnstown air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Johnstown Station | 38 |
(local time)
SEE WORLD AQI RANKING
US AQI
39
live AQI index
Good
Overview
What is the current air quality in Johnstown?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 39 US AQI | O3 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 3.4µg/m³ | |
| PM10 | 9µg/m³ | |
| O3 | 96µg/m³ | |
| NO2 | 2.6µg/m³ | |
| SO2 | 1.1µg/m³ | |
✓
PM2.5 concentration in Johnstown air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Johnstown?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Johnstown air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, May 29 | Good 25 AQI US |  | 64.4° 46.4° |  11.2 mp/h |
| Thursday, May 30 | Good 26 AQI US |  | 69.8° 41° | 6.7 mp/h |
| Friday, May 31 | Good 26 AQI US | | 75.2° 48.2° | 4.5 mp/h |
| Today | Good 39 AQI US |  20% | 66.2° 55.4° | 6.7 mp/h |
| Sunday, Jun 2 | Moderate 63 AQI US  | 30% | 78.8° 55.4° | 4.5 mp/h |
| Monday, Jun 3 | Moderate 59 AQI US | 20% | 80.6° 59° | 6.7 mp/h |
| Tuesday, Jun 4 | Moderate 66 AQI US | 100% | 80.6° 60.8° | 6.7 mp/h |
| Wednesday, Jun 5 | Moderate 62 AQI US | 100% | 77° 62.6° | 11.2 mp/h |
| Thursday, Jun 6 | Good 30 AQI US | 30% | 68° 53.6° | 15.7 mp/h |
| Friday, Jun 7 | Good 18 AQI US | 80% | 69.8° 55.4° | 15.7 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Johnstown air quality data attribution
1Contributor
Government Contributor
Where is the cleanest air quality in Johnstown?
AQI US, Metric