❮
Today Hourly 7 days 30 days Air Quality
❯
Hourly Weather | Today | Thursday, September 4, 2025
Cambridge, Massachusetts
11 AM
Sunny WeatherSunny weather, clear skies and sunny weather.
73°
Feels Like 77°
0
Humidity: 54%
Wind: 7 mph
UV Index: 44
12 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
75°
Feels Like 81°
0
Humidity: 49%
Wind: 8 mph
UV Index: 54
1 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
77°
Feels Like 82°
0
Humidity: 45%
Wind: 9 mph
UV Index: 60
2 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
79°
Feels Like 82°
0
Humidity: 43%
Wind: 9 mph
UV Index: 54
3 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
81°
Feels Like 82°
0
Humidity: 41%
Wind: 9 mph
UV Index: 44
4 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
79°
Feels Like 79°
0
Humidity: 43%
Wind: 10 mph
UV Index: 33
5 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
77°
Feels Like 77°
0
Humidity: 46%
Wind: 10 mph
UV Index: 22
6 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
75°
Feels Like 73°
0
Humidity: 49%
Wind: 10 mph
UV Index: 13
7 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
73°
Feels Like 70°
0
Humidity: 56%
Wind: 10 mph
UV Index: 4
8 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
70°
Feels Like 66°
0
Humidity: 64%
Wind: 9 mph
UV Index: 0
9 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
66°
Feels Like 64°
0
Humidity: 72%
Wind: 9 mph
UV Index: 0
10 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
64°
Feels Like 63°
0
Humidity: 79%
Wind: 8 mph
UV Index: 0
11 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
64°
Feels Like 63°
0
Humidity: 85%
Wind: 8 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

11 AM
44 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.52 µg/m³
  • PM10: 7.75 µg/m³
  • O₃: 44.67 ppb
  • NO₂: 5.22 ppb
  • SO₂: 1.32 ppb
  • CO: 171.31 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

12 PM
43 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.24 µg/m³
  • PM10: 7.22 µg/m³
  • O₃: 51.88 ppb
  • NO₂: 4.15 ppb
  • SO₂: 1.17 ppb
  • CO: 165.86 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

1 PM
43 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.64 µg/m³
  • PM10: 7.44 µg/m³
  • O₃: 59.10 ppb
  • NO₂: 3.07 ppb
  • SO₂: 1.01 ppb
  • CO: 160.42 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

2 PM
43 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 7.07 µg/m³
  • PM10: 7.92 µg/m³
  • O₃: 66.31 ppb
  • NO₂: 2.00 ppb
  • SO₂: 0.86 ppb
  • CO: 154.97 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

3 PM
43 AQI
Good air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 6.82 µg/m³
  • PM10: 7.64 µg/m³
  • O₃: 65.83 ppb
  • NO₂: 2.08 ppb
  • SO₂: 0.76 ppb
  • CO: 152.93 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

4 PM
48 AQI
Good air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 6.46 µg/m³
  • PM10: 7.24 µg/m³
  • O₃: 65.36 ppb
  • NO₂: 2.17 ppb
  • SO₂: 0.66 ppb
  • CO: 150.88 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

5 PM
57 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 6.15 µg/m³
  • PM10: 6.91 µg/m³
  • O₃: 64.88 ppb
  • NO₂: 2.26 ppb
  • SO₂: 0.57 ppb
  • CO: 148.84 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

6 PM
65 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 5.75 µg/m³
  • PM10: 6.52 µg/m³
  • O₃: 56.78 ppb
  • NO₂: 3.36 ppb
  • SO₂: 0.59 ppb
  • CO: 151.83 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

7 PM
66 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 5.64 µg/m³
  • PM10: 6.38 µg/m³
  • O₃: 48.68 ppb
  • NO₂: 4.45 ppb
  • SO₂: 0.62 ppb
  • CO: 154.82 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

8 PM
62 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 6.08 µg/m³
  • PM10: 7.33 µg/m³
  • O₃: 40.57 ppb
  • NO₂: 5.55 ppb
  • SO₂: 0.64 ppb
  • CO: 157.80 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

9 PM
53 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 6.28 µg/m³
  • PM10: 7.60 µg/m³
  • O₃: 38.00 ppb
  • NO₂: 5.27 ppb
  • SO₂: 0.66 ppb
  • CO: 154.34 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

Current Real-Time Air Quality Report