Air Quality in Union, United States

Rain
20.2°C · 80.8% humidity
20.2°
Feels 20.2°
45
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
20 1pm
20
20
45 4pm
18
13
9 7pm
7
5
3 10pm
2
2
1 1am
1
1
0 4am
0
0
0 7am
0
0
0 10am
0
0
Station readings 5h ago
AQI 15
PM2.5 3.5 µg/m³ · 5h ago
CAMS model adj -34
54
54
54
54
34
34
27
27
27
34
27
27
27
27
27
27
25
25
25
27
25
25
25
25
AD 728×90

Air Quality Index Trend

5h · 1 stn

Union's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

80.8%
Humidity
76.9 km/h
Wind NNE
1012.7 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
45
10.65 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Union?

Temperature & Precipitation

PM2.5 Trend

5h · 1 station
PM2.510.65 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX5.9
High
AD 300×250
Station readings (3 stations within 25 km)
10.65
Median
9.53
Average
0.7
Low
15.9
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +2.8

What is the 7-day forecast for Union?

07-21
28.6° 20.2°
3.13 mm
07-22
24.2° 17.7°
2.0 mm
07-23
30.2° 18.7°
21.12 mm
07-24
28.0° 17.7°
3.38 mm
07-25
33.1° 22.2°
4.0 mm
07-26
24.1° 20.3°
3.38 mm
07-27
27.6° 21.3°
1.37 mm
Both models agree Avg diff: 3.2°C

Where are air quality stations near Union?

45
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 10.8 µg/m³
42
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 10.1 µg/m³
90
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 30.6 µg/m³
66
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 19.2 µg/m³
30
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 7.2 µg/m³
29
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 7.0 µg/m³
17
Rahway PM, NewJersey, USA
10.4 km PM2.5: 4.1 µg/m³
56
Rahway PM, NewJersey, USA
10.4 km PM2.5: 14.5 µg/m³
28
Rahway PM, NewJersey, USA
10.4 km PM2.5: 6.7 µg/m³
46
Port Richmond, New York, USA
12.8 km PM2.5: 11.0 µg/m³

What cities are near Union?

50 Hillside 43 Maplewood 46 Irvington 40 Millburn 42 Roselle 29 Cranford 44 South Orange 56 Elizabeth 30 Linden 49 Newark
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T20:29 UTC.