What is the air quality in Capitol Hill today?

The current Air Quality Index (AQI) in Capitol Hill is 39 (Good). PM2.5 concentration is 9.39 µg/m³.

What is the temperature in Capitol Hill right now?

The current temperature in Capitol Hill is 27.7°C (feels like 29.7°C). Humidity is 48.6% and wind speed is 24.6 km/h.

Is it safe to go outside in Capitol Hill?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 6.9 (High).

Air Quality in Capitol Hill, United States

Clear

27.7°C · 48.6% humidity

27.7°

Feels 29.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

30 stations

Nearby Monitoring Stations

AQI Forecast

25 2pm

39 5pm

31 8pm

29 11pm

28 2am

25 5am

27 8am

25 11am

Air Quality Index Trend

48h · 3 stn

View full history →

Capitol Hill's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

48.6%

Humidity

24.6 km/h

Wind ESE

1013.7 hPa

Pressure

6.9

UV High

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

9.39 µg/m³

PM10

27.45 µg/m³

050100150200300500

What is the weather forecast for Capitol Hill?

Temperature & Precipitation

PM2.5 Trend

48h · 3 stations

PM2.59.39 µg/m³ ✓ WHO

Good

PM1027.45 µg/m³

Good

UV INDEX6.9

High

Station readings (30 stations within 25 km)

9.39

Median

8.82

Average

6.04

Low

11.5

High

PM2.5 µg/m³ · Model: 12.85 · Bias: +3.5

What is the 7-day forecast for Capitol Hill?

07-21

30.1° 22.4°

0.69 mm

07-22

30.8° 22.9°

07-23

28.9° 19.8°

4.63 mm

07-24

27.7° 20.6°

0.25 mm

07-25

27.6° 20.7°

2.94 mm

07-26

28.0° 21.1°

5.31 mm

07-27

25.9° 22.8°

0.06 mm

Both models agree Avg diff: 3.5°C

Where are air quality stations near Capitol Hill?

Lincoln Park NW

0.9 km PM2.5: 9.6 µg/m³

Friendship Chamberlain

1.6 km PM2.5: 10.6 µg/m³

400 Virginia Ave SW

1.6 km PM2.5: 9.8 µg/m³

Southwest Library

1.7 km PM2.5: 11.6 µg/m³

"2000 Half St SW, Washington Matthew Henson Earth Conservation Center"

2.1 km PM2.5: 15.1 µg/m³

330 21st St NE, Washington, DC 20002

2.2 km PM2.5: 5.1 µg/m³

Friendship Blow Pierce

2.3 km PM2.5: 8.1 µg/m³

901 G St NW

2.4 km PM2.5: 12.9 µg/m³

Center City Shaw Campus

2.8 km PM2.5: 9.7 µg/m³

Kingman Island - Heritage Island Bridge

2.9 km PM2.5: 8.8 µg/m³

What cities are near Capitol Hill?

39 Capitol Riverfront 39 H Street NE 38 NoMa 39 Downtown DC 41 Southwest Waterfront 38 Northwest One 39 Mount Vernon Triangle 39 Shaw 39 Washington 40 Golden Triangle

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T21:53 UTC.