Air Quality in Union, United States

Windy
12.6°C · 72.7% humidity
12.6°
Feels 12.6°
18
Good
Air quality is satisfactory. Enjoy outdoor activities.
7 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
68 12am
68
68
18 3am
32
42
50 6am
35
39
41 9am
36
38
39 12pm
46
47
47 3pm
47
48
48 6pm
48
48
48 9pm
48
48
Station readings 6h ago
AQI 20
PM2.5 4.7 µg/m³ · 6h ago
CAMS model adj +14
54
54
54
54
54
54
54
34
34
34
27
27
27
34
34
34
34
34
34
34
34
34
34
34
AD 728×90

Air Quality Index Trend

16h · 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.

72.7%
Humidity
41.9 km/h
Wind W
1001.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
18
4.16 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Union?

Temperature & Precipitation

PM2.5 Trend

16h · 1 station
PM2.54.16 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (7 stations within 25 km)
4.16
Median
4.16
Average
2.4
Low
6.0
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +5.6

What is the 7-day forecast for Union?

06-09
35.0° 12.6°
0.19 mm
06-10
21.9° 19.0°
15.25 mm
06-11
26.7° 13.8°
06-12
24.2° 16.4°
20.75 mm
06-13
30.7° 17.5°
1.19 mm
06-14
24.8° 18.0°
12.38 mm
06-15
25.2° 16.7°
Both models agree Avg diff: 6.6°C

Where are air quality stations near Union?

17
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 4.1 µg/m³
26
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 6.2 µg/m³
2
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 0.5 µg/m³
9
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 2.2 µg/m³
21
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 5.0 µg/m³
21
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 5.0 µg/m³
26
Rahway PM, NewJersey, USA
10.4 km PM2.5: 6.2 µg/m³
34
Rahway PM, NewJersey, USA
10.4 km PM2.5: 8.2 µg/m³
25
Rahway PM, NewJersey, USA
10.4 km PM2.5: 6.0 µg/m³
24
Port Richmond, New York, USA
12.8 km PM2.5: 5.8 µg/m³

What cities are near Union?

18 Hillside 17 Maplewood 18 Irvington 17 Millburn 18 Roselle 17 Cranford 18 South Orange 19 Elizabeth 17 Linden 17 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 2026-06-09T07:42 UTC.