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Plymouth (Connecticut) (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

Cloudy
13°C
Cloudy
Humidity
61.2%
Wind
5 m/s
Pressure
1023 hPa
Direction
121°
Sunrise
04:00
Sunset
16:00
24h Forecast:
Temp.
4° / 16°
Precip.
10.1mm
Max wind
5.9 m/s

Hourly Forecast

04.04
Now
Weather
13°
5
04.04
23:00
Weather
11°
5
05.04
00:00
Weather
6
05.04
01:00
Weather
6
05.04
02:00
Weather
5
05.04
03:00
Weather
5
05.04
04:00
Weather
5
05.04
05:00
Weather
05.04
06:00
Weather
05.04
07:00
Weather
05.04
08:00
Weather
05.04
09:00
Weather
05.04
10:00
Weather
05.04
11:00
Weather
05.04
12:00
Weather
5
05.04
13:00
Weather
11°
5
05.04
14:00
Weather
14°
0.7
6
05.04
15:00
Weather
16°
1.9
6
05.04
16:00
Weather
16°
3.5
5
05.04
17:00
Weather
16°
1.4
5
05.04
18:00
Weather
16°
0.7
05.04
19:00
Weather
16°
1.3
05.04
20:00
Weather
15°
0.6
05.04
21:00
Weather
13°
5

Temperature

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

Precipitation

3.5mm
0mm
14:00
0.7mm
15:00
1.9mm
16:00
3.5mm
17:00
1.4mm
18:00
0.7mm
19:00
1.3mm
20:00
0.6mm
22:00 09:00 21:00

Wind

5.9m/s
0m/s
22:00
5.2 m/s
23:00
5.3 m/s
00:00
5.7 m/s
01:00
5.7 m/s
02:00
5.3 m/s
03:00
5.3 m/s
04:00
5.3 m/s
05:00
5 m/s
06:00
4.9 m/s
07:00
4.6 m/s
08:00
4.8 m/s
09:00
4.5 m/s
10:00
4.3 m/s
11:00
4.8 m/s
12:00
5.3 m/s
13:00
5.3 m/s
14:00
5.9 m/s
15:00
5.6 m/s
16:00
5.1 m/s
17:00
5.2 m/s
18:00
4.9 m/s
19:00
4.6 m/s
20:00
4.9 m/s
21:00
5.1 m/s
22:00 09:00 21:00

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
33.6 km
78
26%

Measurement time: 2026-04-04 22:00

Calculated from PM2.5/PM10

O3
32.9 km
113.32 µg/m3
70.8%

Measurement time: 2026-04-04 23:11

source: OpenWeatherMap

PM2.5
33.6 km
25 µg/m3
29.8%

Measurement time: 2026-04-04 22:00

source: Aqicn

PM10
33.6 km
15 µg/m3
10.7%

Measurement time: 2026-04-04 22:00

source: Aqicn

NO2
91 km
11.4 µg/m3
5.7%

Measurement time: 2026-04-04 22:00

source: Aqicn

CO
32.9 km
0.2026 mg/m3
1.4%

Measurement time: 2026-04-04 23:11

source: OpenWeatherMap

SO2
32.9 km
1.72 µg/m3
0.5%

Measurement time: 2026-04-04 23:11

source: OpenWeatherMap

Info


Latitude: 41.67204
Longitude: -73.05289


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About Air Quality in Plymouth

Air quality in Plymouth 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 Plymouth

  • 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 Plymouth?

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 Plymouth

If you're planning outdoor activities in Plymouth, 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.