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Port Jefferson Station (New York) (US)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Fair
6°C
Fair
Humidity
58.2%
Wind
9 m/s
Pressure
1013.9 hPa
Direction
297°
Sunrise
04:00
Sunset
16:00
24h Forecast:
Temp.
4° / 12°
Precip.
0.9mm
Max wind
9.2 m/s

Hourly Forecast

06.04
Now
Weather
9
06.04
09:00
Weather
9
06.04
10:00
Weather
9
06.04
11:00
Weather
8
06.04
12:00
Weather
7
06.04
13:00
Weather
7
06.04
14:00
Weather
6
06.04
15:00
Weather
6
06.04
16:00
Weather
6
06.04
17:00
Weather
6
06.04
18:00
Weather
10°
7
06.04
19:00
Weather
11°
6
06.04
20:00
Weather
12°
7
06.04
21:00
Weather
12°
6
06.04
22:00
Weather
11°
6
06.04
23:00
Weather
5
07.04
00:00
Weather
07.04
01:00
Weather
07.04
02:00
Weather
07.04
03:00
Weather
07.04
04:00
Weather
07.04
05:00
Weather
07.04
06:00
Weather
07.04
07:00
Weather
0.9

Temperature

12°C
4°C
08:00
6°C
09:00
5°C
10:00
4°C
11:00
4°C
12:00
4°C
13:00
5°C
14:00
6°C
15:00
8°C
16:00
9°C
17:00
9°C
18:00
10°C
19:00
11°C
20:00
12°C
21:00
12°C
22:00
11°C
23:00
9°C
00:00
7°C
01:00
6°C
02:00
6°C
03:00
5°C
04:00
5°C
05:00
5°C
06:00
5°C
07:00
5°C
08:00 19:00 07:00

Precipitation

0.9mm
0mm
07:00
0.9mm
08:00 19:00 07:00

Wind

9.2m/s
0m/s
08:00
8.7 m/s
09:00
9.2 m/s
10:00
8.5 m/s
11:00
7.9 m/s
12:00
7 m/s
13:00
6.9 m/s
14:00
6.2 m/s
15:00
5.5 m/s
16:00
5.6 m/s
17:00
6 m/s
18:00
6.7 m/s
19:00
6.2 m/s
20:00
6.6 m/s
21:00
5.6 m/s
22:00
6.2 m/s
23:00
5.3 m/s
00:00
3.7 m/s
01:00
2.5 m/s
02:00
2.4 m/s
03:00
3.6 m/s
04:00
4.5 m/s
05:00
4.6 m/s
06:00
4.6 m/s
07:00
4.8 m/s
08:00 19:00 07:00

Radiation

No sensor within 100 km.

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
84 km
37
12.3%

Measurement time: 2026-04-06 08:00

Calculated from PM2.5/PM10

O3
84 km
25.6 µg/m3
16%

Measurement time: 2026-04-06 08:00

source: Aqicn

PM2.5
84 km
9 µg/m3
10.7%

Measurement time: 2026-04-06 08:00

source: Aqicn

NO2
84 km
4.8 µg/m3
2.4%

Measurement time: 2026-04-06 08:00

source: Aqicn

CO
84 km
0.0034 mg/m3
0%

Measurement time: 2026-04-06 08:00

source: Aqicn

Info

About Air Quality in Port Jefferson Station

Air quality in Port Jefferson Station is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Port Jefferson Station

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Port Jefferson Station?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Port Jefferson Station

If you're planning outdoor activities in Port Jefferson Station, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.