Air Quality in Union, United States

Clear
29.5°C · 25.5% humidity
29.5°
Feels 29.5°
56
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
14 7pm
21
21
56 10pm
46
39
27 1am
23
21
26 4am
24
23
23 7am
15
15
15 10am
14
14
14 1pm
14
14
14 4pm
14
14
Station readings 8h ago
AQI 9
PM2.5 2.2 µg/m³ · 8h ago
CAMS model adj -13
27
34
34
34
34
34
27
27
27
34
34
34
34
27
27
27
27
27
27
27
27
27
27
27
AD 728×90

Air Quality Index Trend

12h · 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.

25.5%
Humidity
24.1 km/h
Wind WNW
1010.5 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
56
14.5 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Union?

Temperature & Precipitation

PM2.5 Trend

12h · 1 station
PM2.514.5 µg/m³ ✓ WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (2 stations within 25 km)
14.5
Median
14.5
Average
14.5
Low
14.5
High
PM2.5 µg/m³ · Model: 10.0 · Bias: -4.5

What is the 7-day forecast for Union?

08-03
29.5° 21.8°
31.13 mm
08-04
38.1° 24.3°
08-05
35.8° 22.6°
0.25 mm
08-06
30.4° 21.7°
08-07
30.0° 22.1°
3.75 mm
08-08
37.8° 22.1°
0.44 mm
08-09
37.9° 25.2°
0.25 mm
Both models agree Avg diff: 3.0°C

Where are air quality stations near Union?

29
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 7.0 µg/m³
72
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 22.1 µg/m³
72
Elizabeth Trailer, NewJersey, USA
7.8 km PM2.5: 22.1 µg/m³
2
Rahway PM, NewJersey, USA
10.4 km PM2.5: 0.5 µg/m³
2
Rahway PM, NewJersey, USA
10.4 km PM2.5: 0.5 µg/m³
6
Port Richmond, New York, USA
12.8 km PM2.5: 1.4 µg/m³
37
Fresh Kills West, New York, USA
14.2 km PM2.5: 8.9 µg/m³
30
Jersey City FH, NewJersey, USA
18.0 km PM2.5: 7.2 µg/m³
54
Jersey City FH, NewJersey, USA
18.0 km PM2.5: 13.5 µg/m³
21
Jersey City FH, NewJersey, USA
18.0 km PM2.5: 5.0 µg/m³

What cities are near Union?

56 Hillside 56 Maplewood 56 Irvington 56 Millburn 56 Roselle 56 Cranford 56 South Orange 56 Elizabeth 56 Linden 55 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 2026-08-08T02:58 UTC.