Hourly Weather | Today Wednesday, March 18, 2026
Malden, Massachusetts
9 AM
Sunny Weather
27°
Feels Like 19°
0
Humidity: 41%
UV Index: 2
Wind: 10 mph
10 AM
Sunny Weather
28°
Feels Like 23°
0
Humidity: 36%
UV Index: 3
Wind: 10 mph
11 AM
Cloudy Weather
30°
Feels Like 27°
0
Humidity: 32%
UV Index: 4
Wind: 10 mph
12 PM
Cloudy Weather
34°
Feels Like 32°
0
Humidity: 29%
UV Index: 4
Wind: 9 mph
1 PM
Cloudy Weather
34°
Feels Like 37°
0
Humidity: 28%
UV Index: 4
Wind: 7 mph
2 PM
Cloudy Weather
34°
Feels Like 37°
0
Humidity: 27%
UV Index: 3
Wind: 6 mph
3 PM
Cloudy Weather
36°
Feels Like 37°
0
Humidity: 26%
UV Index: 4
Wind: 7 mph
4 PM
Cloudy Weather
36°
Feels Like 36°
0
Humidity: 27%
UV Index: 3
Wind: 7 mph
5 PM
Cloudy Weather
36°
Feels Like 34°
0
Humidity: 27%
UV Index: 2
Wind: 7 mph
6 PM
Cloudy Weather
34°
Feels Like 30°
0
Humidity: 32%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Night
34°
Feels Like 27°
0
Humidity: 43%
UV Index: 0
Wind: 9 mph
8 PM
Cloudy Night
32°
Feels Like 25°
0
Humidity: 51%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
30°
Feels Like 25°
0
Humidity: 56%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
30°
Feels Like 23°
0
Humidity: 59%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Night
28°
Feels Like 23°
0
Humidity: 61%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 0.64 µg/m³
  • PM10: 1.17 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.55 µg/m³
  • PM10: 1.04 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.96 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.52 µg/m³
  • PM10: 0.89 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

1 PM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.56 µg/m³
  • PM10: 0.93 µg/m³
  • O3: 0.052 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.72 µg/m³
  • PM10: 1.12 µg/m³
  • O3: 0.053 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.02 µg/m³
  • PM10: 1.44 µg/m³
  • O3: 0.055 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 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.

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

Pollutant Concentrations:

  • PM2.5: 1.33 µg/m³
  • PM10: 1.77 µg/m³
  • O3: 0.055 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 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.

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

Pollutant Concentrations:

  • PM2.5: 1.54 µg/m³
  • PM10: 1.98 µg/m³
  • O3: 0.055 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 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.

6 PM
50 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.71 µg/m³
  • PM10: 2.14 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.81 µg/m³
  • PM10: 2.25 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.74 µg/m³
  • PM10: 2.17 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.7 µg/m³
  • PM10: 2.17 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.78 µg/m³
  • PM10: 2.33 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.94 µg/m³
  • PM10: 2.59 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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