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 Princeton
Air quality index (AQI) and PM2.5 air pollution in Princeton
14 people follow this city
Princeton Air Quality Map
Real-time Princeton air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Princeton today?
 | Index | Moderate | |
 | Tree pollen | Moderate | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Princeton?
| Weather | Broken clouds |
| Temperature | 55.4°F |
| Humidity | 83% |
| Wind | 10.7 mp/h |
| Pressure | 29.8 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Casa Grande, Arizona | 94 |
| 2 | San Antonio, Texas | 73 |
| 3 | Bridgeport, Connecticut | 71 |
| 4 | Boerne, Texas | 70 |
| 5 | Baltimore, Maryland | 64 |
| 6 | Lancaster, Pennsylvania | 64 |
| 7 | The Woodlands, Texas | 64 |
| 8 | Washington, Pennsylvania | 64 |
| 9 | Allentown, Pennsylvania | 63 |
| 10 | Dundalk, Maryland | 62 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
32*
live AQI index
Good
Overview
What is the current air quality in Princeton?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 32* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 5.8*µg/m³ | |
!
PM2.5
x1.2
PM2.5 concentration in Princeton is currently 1.2 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Princeton?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Princeton air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Tuesday, May 7 | Good 35 AQI US |  100% | 68° 51.8° |  15.7 mp/h |
| Wednesday, May 8 | Good 21 AQI US | 80% | 71.6° 46.4° | 17.9 mp/h |
| Thursday, May 9 | Good 24 AQI US | 100% | 50° 44.6° | 15.7 mp/h |
| Friday, May 10 | Good 7 AQI US | | 60.8° 42.8° | 8.9 mp/h |
| Saturday, May 11 | Good 8 AQI US | 100% | 50° 46.4° | 11.2 mp/h |
| Sunday, May 12 | Good 8 AQI US | | 62.6° 42.8° | 8.9 mp/h |
| Monday, May 13 | Good 19 AQI US | 20% | 62.6° 50° | 8.9 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 Princeton?
No locations are available.
AQI US, Metric