Hourly Weather | Today Tuesday, April 28, 2026
Newton, Massachusetts
6 AM
Sunny Weather
39°
Feels Like 37°
0
Humidity: 83%
UV Index: 0
Wind: 6 mph
7 AM
Sunny Weather
43°
Feels Like 41°
0
Humidity: 77%
UV Index: 1
Wind: 6 mph
8 AM
Sunny Weather
46°
Feels Like 46°
0
Humidity: 72%
UV Index: 2
Wind: 7 mph
9 AM
Sunny Weather
48°
Feels Like 50°
0
Humidity: 61%
UV Index: 3
Wind: 8 mph
10 AM
Sunny Weather
54°
Feels Like 55°
0
Humidity: 51%
UV Index: 4
Wind: 9 mph
11 AM
Cloudy Weather
57°
Feels Like 61°
0
Humidity: 44%
UV Index: 5
Wind: 9 mph
12 PM
Cloudy Weather
59°
Feels Like 63°
0
Humidity: 40%
UV Index: 7
Wind: 10 mph
1 PM
Cloudy Weather
61°
Feels Like 66°
0
Humidity: 36%
UV Index: 8
Wind: 12 mph
2 PM
Cloudy Weather
61°
Feels Like 63°
0
Humidity: 36%
UV Index: 7
Wind: 13 mph
3 PM
Cloudy Weather
59°
Feels Like 61°
0
Humidity: 36%
UV Index: 5
Wind: 13 mph
4 PM
Cloudy Weather
57°
Feels Like 57°
0
Humidity: 36%
UV Index: 4
Wind: 12 mph
5 PM
Cloudy Weather
55°
Feels Like 55°
0
Humidity: 38%
UV Index: 3
Wind: 10 mph
6 PM
Cloudy Weather
54°
Feels Like 52°
0
Humidity: 42%
UV Index: 2
Wind: 10 mph
7 PM
Cloudy Weather
52°
Feels Like 46°
0
Humidity: 50%
UV Index: 1
Wind: 10 mph
8 PM
Cloudy Weather
48°
Feels Like 43°
0
Humidity: 59%
UV Index: 0
Wind: 9 mph
9 PM
Cloudy Weather
46°
Feels Like 41°
0
Humidity: 64%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Weather
45°
Feels Like 39°
0
Humidity: 71%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Weather
45°
Feels Like 39°
0
Humidity: 73%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
18 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.37 µg/m³
  • PM10: 5.99 µg/m³
  • O3: 0.014 ppm
  • NO2: 7.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 AM
19 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.46 µg/m³
  • PM10: 6.05 µg/m³
  • O3: 0.014 ppm
  • NO2: 7.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 AM
19 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.58 µg/m³
  • PM10: 6.2 µg/m³
  • O3: 0.016 ppm
  • NO2: 5.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 AM
21 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.47 µg/m³
  • PM10: 6.06 µg/m³
  • O3: 0.022 ppm
  • NO2: 5.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.62 µg/m³
  • PM10: 6.24 µg/m³
  • O3: 0.026 ppm
  • NO2: 4.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.14 µg/m³
  • PM10: 6.81 µg/m³
  • O3: 0.032 ppm
  • NO2: 4.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

12 PM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.59 µg/m³
  • PM10: 4.62 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.02 µg/m³
  • PM10: 5.06 µg/m³
  • O3: 0.056 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

2 PM
67 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.52 µg/m³
  • PM10: 5.73 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
73 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.65 µg/m³
  • PM10: 5.99 µg/m³
  • O3: 0.061 ppm
  • NO2: 0.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
75 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.4 µg/m³
  • PM10: 5.8 µg/m³
  • O3: 0.062 ppm
  • NO2: 0.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
74 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.93 µg/m³
  • PM10: 5.33 µg/m³
  • O3: 0.062 ppm
  • NO2: 0.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
67 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.53 µg/m³
  • PM10: 4.94 µg/m³
  • O3: 0.059 ppm
  • NO2: 1.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
56 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.12 µg/m³
  • PM10: 4.54 µg/m³
  • O3: 0.056 ppm
  • NO2: 2.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.7 µg/m³
  • PM10: 4.14 µg/m³
  • O3: 0.053 ppm
  • NO2: 3.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.29 µg/m³
  • PM10: 3.8 µg/m³
  • O3: 0.050 ppm
  • NO2: 3.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.97 µg/m³
  • PM10: 3.58 µg/m³
  • O3: 0.048 ppm
  • NO2: 3.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.75 µg/m³
  • PM10: 3.42 µg/m³
  • O3: 0.048 ppm
  • NO2: 3.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.