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Webster (Massachusetts) (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
-2°C
Cloudy
Humidity
73.4%
Wind
2 m/s
Pressure
1033 hPa
Direction
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-2° / 6°
Precip.
7.8mm
Max wind
6.7 m/s

Hourly Forecast

15.03
Now
Weather
-2°
15.03
13:00
Weather
-1°
15.03
14:00
Weather
15.03
15:00
Weather
15.03
16:00
Weather
15.03
17:00
Weather
15.03
18:00
Weather
15.03
19:00
Weather
15.03
20:00
Weather
15.03
21:00
Weather
5
15.03
22:00
Weather
15.03
23:00
Weather
16.03
00:00
Weather
-0°
16.03
01:00
Weather
-1°
16.03
02:00
Weather
-1°
16.03
03:00
Weather
-1°
16.03
04:00
Weather
-0°
16.03
05:00
Weather
5
16.03
06:00
Weather
5
16.03
07:00
Weather
16.03
08:00
Weather
16.03
09:00
Weather
0.7
6
16.03
10:00
Weather
3
6
16.03
11:00
Weather
4.1
7

Temperature

6°C
-2°C
12:00
-2°C
13:00
-1°C
14:00
0°C
15:00
1°C
16:00
2°C
17:00
4°C
18:00
5°C
19:00
6°C
20:00
6°C
21:00
5°C
22:00
3°C
23:00
1°C
00:00
-0°C
01:00
-1°C
02:00
-1°C
03:00
-1°C
04:00
-0°C
05:00
1°C
06:00
2°C
07:00
3°C
08:00
4°C
09:00
5°C
10:00
5°C
11:00
6°C
12:00 23:00 11:00

Precipitation

4.1mm
0mm
09:00
0.7mm
10:00
3mm
11:00
4.1mm
12:00 23:00 11:00

Wind

6.7m/s
0m/s
12:00
1.7 m/s
13:00
2.1 m/s
14:00
2.3 m/s
15:00
2.5 m/s
16:00
2.6 m/s
17:00
2.9 m/s
18:00
3.3 m/s
19:00
4 m/s
20:00
4.5 m/s
21:00
5.1 m/s
22:00
4.2 m/s
23:00
4 m/s
00:00
4 m/s
01:00
4.2 m/s
02:00
4.4 m/s
03:00
4.4 m/s
04:00
4.9 m/s
05:00
5.3 m/s
06:00
5.4 m/s
07:00
5 m/s
08:00
5 m/s
09:00
5.7 m/s
10:00
6 m/s
11:00
6.7 m/s
12:00 23:00 11:00

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
63.8 km
6
2%

Measurement time: 2026-03-15 10:34

Calculated from PM2.5/PM10

O3
63.8 km
83.04 µg/m3
51.9%

Measurement time: 2026-03-15 10:34

source: OpenWeatherMap

NO2
63.8 km
4.68 µg/m3
2.3%

Measurement time: 2026-03-15 10:34

source: OpenWeatherMap

PM10
63.8 km
2.62 µg/m3
1.9%

Measurement time: 2026-03-15 10:34

source: OpenWeatherMap

PM2.5
63.8 km
1.59 µg/m3
1.9%

Measurement time: 2026-03-15 10:34

source: OpenWeatherMap

CO
63.8 km
0.17261 mg/m3
1.2%

Measurement time: 2026-03-15 10:34

source: OpenWeatherMap

SO2
63.8 km
0.92 µg/m3
0.3%

Measurement time: 2026-03-15 10:34

source: OpenWeatherMap

Info


Latitude: 42.0501
Longitude: -71.88007


Solar Energy

Low
217.8 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Webster

About Air Quality in Webster

Air quality in Webster 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 Webster

  • 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 Webster?

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 Webster

If you're planning outdoor activities in Webster, 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.