Hourly Weather | Today Sunday, August 16, 2026
Active Weather Warnings
Pittsburgh, Pennsylvania
1 PM
Cloudy Weather
81°
Feels Like 88°
34
Humidity: 81%
UV Index: 2
Wind: 10 mph
2 PM
Cloudy Weather
82°
Feels Like 91°
34
Humidity: 78%
UV Index: 3
Wind: 10 mph
3 PM
Cloudy Weather
82°
Feels Like 91°
34
Humidity: 75%
UV Index: 3
Wind: 12 mph
4 PM
Cloudy Weather
82°
Feels Like 90°
40
Humidity: 78%
UV Index: 2
Wind: 12 mph
5 PM
Sunny with a Chance of Thunderstorms
81°
Feels Like 82°
69
Humidity: 79%
UV Index: 1
Wind: 12 mph
6 PM
Cloudy Weather
81°
Feels Like 84°
49
Humidity: 81%
UV Index: 1
Wind: 12 mph
7 PM
Sunny with a Chance of Thunderstorms
77°
Feels Like 77°
69
Humidity: 87%
UV Index: 0
Wind: 9 mph
8 PM
Stormy Weather
79°
Feels Like 79°
54
Humidity: 83%
UV Index: 0
Wind: 9 mph
9 PM
Cloudy Weather
75°
Feels Like 79°
49
Humidity: 88%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Weather
75°
Feels Like 79°
42
Humidity: 88%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Weather
75°
Feels Like 79°
34
Humidity: 89%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.2 µg/m³
  • PM10: 3.26 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.17 µg/m³
  • PM10: 3.24 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

3 PM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.54 µg/m³
  • PM10: 3.62 µg/m³
  • O3: 0.027 ppm
  • NO2: 1 ppb
  • SO2: 0.8 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

4 PM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.16 µg/m³
  • PM10: 4.26 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.9 ppb
  • SO2: 0.9 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

5 PM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.88 µg/m³
  • PM10: 4.99 µg/m³
  • O3: 0.028 ppm
  • NO2: 1 ppb
  • SO2: 0.9 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.56 µg/m³
  • PM10: 5.69 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

7 PM
26 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.12 µg/m³
  • PM10: 6.27 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.2 ppb
  • SO2: 0.8 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

8 PM
27 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.51 µg/m³
  • PM10: 6.68 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.2 ppb
  • SO2: 0.8 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

9 PM
27 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.58 µg/m³
  • PM10: 6.73 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

10 PM
28 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.63 µg/m³
  • PM10: 6.77 µg/m³
  • O3: 0.022 ppm
  • NO2: 1 ppb
  • SO2: 0.7 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

11 PM
28 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.76 µg/m³
  • PM10: 6.89 µg/m³
  • O3: 0.020 ppm
  • NO2: 1 ppb
  • SO2: 0.7 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Pittsburgh

Severe Future Possible

Flood Watch

Flood Watch issued August 16 at 4:37AM EDT until August 17 at 8:00AM EDT by NWS Pittsburgh PA
Aug 16, 4:37 AM Aug 17, 8:00 AM
WHAT: Flash flooding caused by excessive rainfall continues to be
possible.

WHERE: Portions of east central Ohio, including the following
areas, Belmont, Carroll, Columbiana, Coshocton, Guernsey, Harrison,
Jefferson OH, Monroe, Muskingum, Noble and Tuscarawas,
Pennsylvania, including the following areas, Allegheny, Beaver,
Fayette, Greene, Higher Elevations of Fayette, Higher Elevations of
Westmoreland, Washington and Westmoreland, and West Virginia,
including the following areas, Brooke, Eastern Preston, Eastern
Tucker, Hancock, Marion, Marshall, Monongalia, Ohio, Preston,
Ridges of Eastern Monongalia and Northwestern Preston, Western
Tucker and Wetzel.

WHEN: Through Monday morning.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.

ADDITIONAL DETAILS:
- Total rainfall of 1.5 to 2.5 inches is expected through 8 AM
Monday across much of the watch area, with isolated totals of 3
to 5 inches possible. With soil still wet from past rainfall,
such rain totals could lead to flash flooding. Additional
rainfall this afternoon and evening will exacerbate conditions
allowing runoff to occur immediately resulting in flash flooding.
- http://www.weather.gov/safety/flood
+ Read More
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Updated: Aug 16, 11:11 AM Source: NWS Alert