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Waterbury (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

Heavy snow
-2°C
Heavy snow
Humidity
91.9%
Wind
7 m/s
Pressure
1011.3 hPa
Direction
42°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-4° / -2°
Precip.
21.5mm
Max wind
10.8 m/s

Hourly Forecast

23.02
Now
Weather
-2°
1.1
7
23.02
03:00
Weather
-2°
1.1
7
23.02
04:00
Weather
-2°
1.3
8
23.02
05:00
Weather
-3°
1.8
8
23.02
06:00
Weather
-3°
1.9
9
23.02
07:00
Weather
-3°
1.7
9
23.02
08:00
Weather
-3°
1.3
9
23.02
09:00
Weather
-3°
1.9
10
23.02
10:00
Weather
-3°
1.7
10
23.02
11:00
Weather
-3°
1.7
11
23.02
12:00
Weather
-3°
1.2
11
23.02
13:00
Weather
-3°
0.7
11
23.02
14:00
Weather
-3°
0.7
10
23.02
15:00
Weather
-3°
0.6
10
23.02
16:00
Weather
-3°
0.5
10
23.02
17:00
Weather
-3°
0.6
8
23.02
18:00
Weather
-3°
0.8
8
23.02
19:00
Weather
-4°
0.6
7
23.02
20:00
Weather
-3°
0.3
9
23.02
21:00
Weather
-3°
9
23.02
22:00
Weather
-3°
9
23.02
23:00
Weather
-3°
9
24.02
00:00
Weather
-4°
9
24.02
01:00
Weather
-4°
8

Temperature

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

Precipitation

1.9mm
0mm
02:00
1.1mm
03:00
1.1mm
04:00
1.3mm
05:00
1.8mm
06:00
1.9mm
07:00
1.7mm
08:00
1.3mm
09:00
1.9mm
10:00
1.7mm
11:00
1.7mm
12:00
1.2mm
13:00
0.7mm
14:00
0.7mm
15:00
0.6mm
16:00
0.5mm
17:00
0.6mm
18:00
0.8mm
19:00
0.6mm
20:00
0.3mm
02:00 13:00 01:00

Wind

10.8m/s
0m/s
02:00
6.6 m/s
03:00
7 m/s
04:00
7.5 m/s
05:00
8.2 m/s
06:00
8.6 m/s
07:00
9 m/s
08:00
9.4 m/s
09:00
9.6 m/s
10:00
9.8 m/s
11:00
10.6 m/s
12:00
10.8 m/s
13:00
10.5 m/s
14:00
10.3 m/s
15:00
9.5 m/s
16:00
9.6 m/s
17:00
8 m/s
18:00
7.8 m/s
19:00
7.1 m/s
20:00
8.5 m/s
21:00
8.9 m/s
22:00
9.1 m/s
23:00
8.7 m/s
00:00
8.6 m/s
01:00
8.3 m/s
02:00 13:00 01:00

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
81.9 km
54
18%

Measurement time: 2026-02-23 02:00

Calculated from PM2.5/PM10

O3
81.9 km
28.1 µg/m3
17.6%

Measurement time: 2026-02-23 02:00

source: Aqicn

PM2.5
81.9 km
14 µg/m3
16.7%

Measurement time: 2026-02-23 02:00

source: Aqicn

NO2
81.9 km
11.4 µg/m3
5.7%

Measurement time: 2026-02-23 02:00

source: Aqicn

CO
81.9 km
0.0034 mg/m3
0%

Measurement time: 2026-02-23 02:00

source: Aqicn

Info


Latitude: 41.55815
Longitude: -73.0515


Solar Energy

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0 W/m²
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About Air Quality in Waterbury

Air quality in Waterbury 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 Waterbury

  • 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 Waterbury?

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 Waterbury

If you're planning outdoor activities in Waterbury, 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.