Air Quality in Smithtown, United States

Clear
22.3°C · 48.4% humidity
22.3°
Feels 22.3°
54
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast

Nearby Monitoring Stations

AQI Forecast
34 1am
34
34
54 4am
68
64
41 7am
39
31
30 10am
36
35
55 1pm
55
55
54 4pm
34
34
27 7pm
27
27
34 10pm
34
34
AD 728×90

Air Quality Index Trend

37h · 3 stn

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

48.4%
Humidity
28.2 km/h
Wind W
1011.1 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
54
13.5 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Smithtown?

Temperature & Precipitation

PM2.5 Trend

37h · 3 stations
PM2.513.5 µg/m³ ✓ WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250

What is the 7-day forecast for Smithtown?

08-03
25.6° 21.2°
4.63 mm
08-04
30.3° 23.0°
08-05
26.2° 22.0°
08-06
25.0° 20.9°
08-07
27.6° 22.5°
7.75 mm
08-08
28.7° 22.6°
1.19 mm
08-09
31.9° 23.0°
0.25 mm
Both models agree Avg diff: 2.1°C

Where are air quality stations near Smithtown?

25
Suffolk County, New York, USA
12.4 km PM2.5: 6.0 µg/m³
18
Suffolk County, New York, USA
12.4 km PM2.5: 4.3 µg/m³

What cities are near Smithtown?

54 Hauppauge 54 Kings Park 54 Ronkonkoma 54 Lake Ronkonkoma 54 Central Islip 54 Commack 54 Centereach 54 East Northport 54 Holbrook 60 Setauket-East Setauket
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T08:20 UTC.