What is the air quality in Smithtown today?

The current Air Quality Index (AQI) in Smithtown is 16 (Good). PM2.5 concentration is 3.8 µg/m³.

What is the temperature in Smithtown right now?

The current temperature in Smithtown is 25.0°C (feels like 25.0°C). Humidity is 78.3% and wind speed is 31.1 km/h.

Is it safe to go outside in Smithtown?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 9.4 (Very High).

Air Quality in Smithtown, United States

Drizzle

25.0°C · 78.3% humidity

25.0°

Feels 25.0°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

25 12pm

16 3pm

21 6pm

24 9pm

25 12am

24 3am

24 6am

25 9am

Air Quality Index Trend

45h · 4 stn

View full history →

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.

78.3%

Humidity

31.1 km/h

Wind WSW

1015.1 hPa

Pressure

9.4

UV Very High

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

3.8 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Smithtown?

Temperature & Precipitation

PM2.5 Trend

45h · 4 stations

PM2.53.8 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX9.4

Very High

Station readings (1 station within 25 km)

3.8

Median

3.8

Average

3.8

Low

3.8

High

PM2.5 µg/m³ · Model: 6.0 · Bias: +2.2

What is the 7-day forecast for Smithtown?

09-05

25.0° 17.2°

4.5 mm

09-06

24.3° 20.0°

0.19 mm

09-07

21.4° 20.1°

0.06 mm

09-08

24.9° 21.3°

1.25 mm

09-09

24.5° 16.3°

0.13 mm

09-10

23.2° 18.9°

27.5 mm

09-11

27.2° 16.9°

Both models agree Avg diff: 3.3°C

Where are air quality stations near Smithtown?

Suffolk County, New York, USA

12.4 km PM2.5: 3.8 µg/m³

Suffolk County, New York, USA

12.4 km PM2.5: 3.8 µg/m³

What cities are near Smithtown?

16 Hauppauge 16 Kings Park 16 Ronkonkoma 16 Lake Ronkonkoma 16 Central Islip 16 Commack 16 Centereach 16 East Northport 16 Holbrook 16 Setauket-East Setauket

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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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 2026-09-05T19:12 UTC.