Hourly Air Quality Forecast - AQI (US EPA)
Good air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
8.96 µg/m³
- PM10:
11.13 µg/m³
- O3:
0.037 ppm
- NO2:
7.7 ppb
- SO2:
0.9 ppb
- CO:
0.21 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
8.85 µg/m³
- PM10:
10.88 µg/m³
- O3:
0.037 ppm
- NO2:
7.2 ppb
- SO2:
1 ppb
- CO:
0.21 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
8.89 µg/m³
- PM10:
10.81 µg/m³
- O3:
0.038 ppm
- NO2:
7 ppb
- SO2:
1.1 ppb
- CO:
0.20 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
9.42 µg/m³
- PM10:
11.33 µg/m³
- O3:
0.038 ppm
- NO2:
7.2 ppb
- SO2:
1.3 ppb
- CO:
0.20 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
10.6 µg/m³
- PM10:
12.73 µg/m³
- O3:
0.037 ppm
- NO2:
8.8 ppb
- SO2:
1.6 ppb
- CO:
0.22 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
11.89 µg/m³
- PM10:
14.42 µg/m³
- O3:
0.036 ppm
- NO2:
11.7 ppb
- SO2:
1.9 ppb
- CO:
0.24 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
13.04 µg/m³
- PM10:
16.15 µg/m³
- O3:
0.036 ppm
- NO2:
14 ppb
- SO2:
2.1 ppb
- CO:
0.26 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
14.42 µg/m³
- PM10:
18.12 µg/m³
- O3:
0.038 ppm
- NO2:
13.3 ppb
- SO2:
2.2 ppb
- CO:
0.28 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
16.36 µg/m³
- PM10:
20.24 µg/m³
- O3:
0.041 ppm
- NO2:
12.4 ppb
- SO2:
2.1 ppb
- CO:
0.28 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
20.71 µg/m³
- PM10:
25.01 µg/m³
- O3:
0.043 ppm
- NO2:
13 ppb
- SO2:
2 ppb
- CO:
0.29 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
26.28 µg/m³
- PM10:
30.99 µg/m³
- O3:
0.045 ppm
- NO2:
14 ppb
- SO2:
2 ppb
- CO:
0.31 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
31.05 µg/m³
- PM10:
36.07 µg/m³
- O3:
0.044 ppm
- NO2:
17.4 ppb
- SO2:
2 ppb
- CO:
0.32 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
32.87 µg/m³
- PM10:
37.86 µg/m³
- O3:
0.043 ppm
- NO2:
19.2 ppb
- SO2:
2 ppb
- CO:
0.33 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
32.8 µg/m³
- PM10:
37.56 µg/m³
- O3:
0.041 ppm
- NO2:
21.3 ppb
- SO2:
2 ppb
- CO:
0.33 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
33.37 µg/m³
- PM10:
38.19 µg/m³
- O3:
0.036 ppm
- NO2:
25.4 ppb
- SO2:
1.7 ppb
- CO:
0.36 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Unhealthy air quality for sensitive groups
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
36.21 µg/m³
- PM10:
41.5 µg/m³
- O3:
0.026 ppm
- NO2:
33.1 ppb
- SO2:
1.3 ppb
- CO:
0.42 ppm
Health Recommendations:
Members of sensitive groups may experience health effects. The general public is less likely to be affected.
Unhealthy air quality for sensitive groups
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
41 µg/m³
- PM10:
46.94 µg/m³
- O3:
0.018 ppm
- NO2:
40.3 ppb
- SO2:
1.2 ppb
- CO:
0.48 ppm
Health Recommendations:
Members of sensitive groups may experience health effects. The general public is less likely to be affected.
Unhealthy air quality for sensitive groups
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
46.65 µg/m³
- PM10:
53.29 µg/m³
- O3:
0.013 ppm
- NO2:
45.7 ppb
- SO2:
1.3 ppb
- CO:
0.54 ppm
Health Recommendations:
Members of sensitive groups may experience health effects. The general public is less likely to be affected.
Unhealthy air quality for sensitive groups
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
53.72 µg/m³
- PM10:
61.19 µg/m³
- O3:
0.009 ppm
- NO2:
49.9 ppb
- SO2:
1.3 ppb
- CO:
0.61 ppm
Health Recommendations:
Members of sensitive groups may experience health effects. The general public is less likely to be affected.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
62.71 µg/m³
- PM10:
71.66 µg/m³
- O3:
0.006 ppm
- NO2:
55.2 ppb
- SO2:
1.3 ppb
- CO:
0.70 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
70.25 µg/m³
- PM10:
80.58 µg/m³
- O3:
0.002 ppm
- NO2:
61 ppb
- SO2:
1.3 ppb
- CO:
0.79 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Weather Alerts and Warnings for Danbury
Moderate
Expected
Observed
Special Weather Statement
Special Weather Statement issued February 25 at 11:52PM EST by NWS Upton NY
Feb 25, 11:52 PM
→ Feb 26, 3:00 AM
Showers are currently moving through southern CT. This
precipitation is falling as freezing rain in some locations where
surface temperatures have dropped below freezing. A glaze of ice
is possible which could cause slick conditions.
Use caution if traveling tonight and leave extra room between you
and the car in front of you.
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