Worst air pollution Union, today and tomorrow
Today (16 July): Air quality in Union is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 37.6/100).
Tomorrow (17 July 2026): Air quality in Union is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 40.4/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Union's air quality in New Jersey reflects the northern New Jersey suburban corridor in Union County, with vehicle emissions from I-78 and the surrounding mixed residential and commercial character contributing local sources. The broader New York-New Jersey metropolitan area's combined traffic and industrial emissions from the Newark corridor on prevailing southwesterlies consistently elevates background pollution, while the flat New Jersey terrain allows reasonable dispersal throughout the year.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
37.6/100
PM2.5 (fine particles):
Good
11.5/100
PM10 (coarse particles):
Good
11.6/100
NO2 (nitrogen dioxide):
Good
7.5/100
O3 (ozone):
Fair
37.6/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.1/100
PM1 (ultrafine particles):
Good
6.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Medium
40.4/100
PM2.5 (fine particles):
Good
7.8/100
PM10 (coarse particles):
Good
3.8/100
NO2 (nitrogen dioxide):
Good
13.1/100
O3 (ozone):
Medium
40.4/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.9/100
PM1 (ultrafine particles):
Good
5.0/100
Pollen forecast in Union
View pollen forecastFrequently Asked Questions
Is air quality bad in Union right now?
On 16 July 2026, overall air quality in Union is fair. AQI is the main air quality indicator at 37.6/100. Pollution peaks around 12:00 PM (O3: 37.6/100).
Will air quality be worse tomorrow in Union?
On 17 July 2026, air quality conditions in Union will be better than today, with AQI forecast at medium at 40.4/100. Pollution peaks around 12:00 PM (O3: 40.4/100).
When is air pollution at its worst in Union?
Union's air quality follows a clear seasonal pattern — once summer ozone season ends, winter typically offers the cleanest air, whereas summer heat waves bring the highest ozone risk, compounded by pollution drifting in from the wider region. Dense urban traffic corridors add a persistent background level of pollution that varies less by season than ozone does.
Are air quality levels in Union based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app