What is the air quality in Holtsville today?

The current Air Quality Index (AQI) in Holtsville is 13 (Good). PM2.5 concentration is 3.1 µg/m³.

What is the temperature in Holtsville right now?

The current temperature in Holtsville is 11.5°C (feels like 11.5°C). Humidity is 55.0% and wind speed is 30.0 km/h.

Is it safe to go outside in Holtsville?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Holtsville, United States

Partly Cloudy

11.5°C · 55.0% humidity

11.5°

Feels 11.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

43h · 4 stn

View full history →

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

55.0%

Humidity

30.0 km/h

Wind E

1029.2 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

3.1 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Holtsville?

Temperature & Precipitation

PM2.5 Trend

43h · 4 stations

PM2.53.1 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (1 station within 25 km)

3.1

Median

3.1

Average

3.1

Low

3.1

High

PM2.5 µg/m³ · Model: 6.0 · Bias: +2.9

What is the 7-day forecast for Holtsville?

10-21

20.0° 10.6°

10-22

16.8° 12.4°

5.94 mm

10-23

16.4° 10.1°

10-24

16.8° 12.3°

0.19 mm

10-25

15.7° 13.3°

31.0 mm

10-26

14.0° 12.2°

10-27

14.4° 10.0°

5.31 mm

Both models agree Avg diff: 3.3°C

Where are air quality stations near Holtsville?

Suffolk County, New York, USA

1.8 km PM2.5: 3.1 µg/m³

What cities are near Holtsville?

13 Farmingville 13 Holbrook 13 Medford 13 Selden 13 Centereach 13 East Patchogue 13 Coram 13 Lake Ronkonkoma 13 Ronkonkoma 13 Sayville

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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 2026-10-21T01:07 UTC.