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Washington, District of Columbia, United States Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

July Air Quality Analysis

Washington, District of Columbia, United States

AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
NaNth undefined NaN
0AQI
Lowest AQI recorded on
NaNth undefined NaN
InfinityAQI


Same Day Analysis (NaNth undefined ):
On this day, AQI across the 0 years varied significantly: 2025 ranks 1st highest AQI at 0 of Good air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

2025 Days Vs Air Quality

Washington, District of Columbia, United States

2025

89%

85

11%

11

Total number of days with different AQI categories in last 182 days in 2025 (183 days remaining)

Good
85 Days
Moderate
11 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days



Under WHO’s Safe Air Quality Limits: 89%

Health Risk Level:

Low

In 2025, 89% of 182 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.

Annual Air Quality Insights

Washington, District of Columbia, United States

AQI levels in 2025

AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

1st March 2025
22AQI
2nd March 2025
36AQI
3rd March 2025
56AQI
4th March 2025
38AQI
5th March 2025
29AQI
1st April 2025
20AQI
2nd April 2025
25AQI
3rd April 2025
36AQI
4th April 2025
32AQI
5th April 2025
41AQI
6th April 2025
40AQI
7th April 2025
19AQI
8th April 2025
22AQI
9th April 2025
20AQI
10th April 2025
24AQI
11th April 2025
24AQI
12th April 2025
19AQI
13th April 2025
20AQI
14th April 2025
37AQI
15th April 2025
37AQI
16th April 2025
15AQI
17th April 2025
21AQI
18th April 2025
40AQI
19th April 2025
55AQI
20th April 2025
42AQI
21st April 2025
32AQI
22nd April 2025
41AQI
23rd April 2025
32AQI
24th April 2025
50AQI
25th April 2025
37AQI
26th April 2025
40AQI
27th April 2025
13AQI
28th April 2025
21AQI
29th April 2025
35AQI
30th April 2025
36AQI
1st May 2025
43AQI
2nd May 2025
46AQI
3rd May 2025
42AQI
4th May 2025
25AQI
5th May 2025
27AQI
6th May 2025
25AQI
7th May 2025
21AQI
8th May 2025
36AQI
9th May 2025
23AQI
10th May 2025
23AQI
11th May 2025
35AQI
12th May 2025
38AQI
13th May 2025
25AQI
14th May 2025
31AQI
15th May 2025
38AQI
16th May 2025
50AQI
17th May 2025
32AQI
18th May 2025
19AQI
19th May 2025
22AQI
20th May 2025
21AQI
21st May 2025
19AQI
22nd May 2025
15AQI
23rd May 2025
14AQI
24th May 2025
14AQI
25th May 2025
17AQI
26th May 2025
23AQI
27th May 2025
31AQI
28th May 2025
19AQI
29th May 2025
20AQI
30th May 2025
33AQI
31st May 2025
31AQI
1st June 2025
22AQI
2nd June 2025
27AQI
3rd June 2025
33AQI
4th June 2025
48AQI
5th June 2025
54AQI
6th June 2025
51AQI
7th June 2025
37AQI
8th June 2025
45AQI
9th June 2025
41AQI
10th June 2025
42AQI
11th June 2025
54AQI
12th June 2025
61AQI
13th June 2025
64AQI
14th June 2025
49AQI
15th June 2025
42AQI
16th June 2025
23AQI
17th June 2025
27AQI
18th June 2025
41AQI
19th June 2025
31AQI
20th June 2025
24AQI
21st June 2025
43AQI
22nd June 2025
46AQI
23rd June 2025
55AQI
24th June 2025
58AQI
25th June 2025
58AQI
26th June 2025
51AQI
27th June 2025
38AQI
28th June 2025
31AQI
29th June 2025
43AQI
30th June 2025
40AQI

36AQI

31AQI

28AQI

43AQI


No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202534AQI

4
1
29
1
31
21
9
85
11

Highest AQI recorded in

June

43AQI


Lowest AQI recorded in

May

28AQI


Most & Least Polluted Years Over the Last 1 Years

Most Polluted Year Recorded
2025(Avg.)
34AQI
Least Polluted Year Recorded
2025(Avg.)
34AQI


Washington's annual 2025 AQI (34) shows an average percentage change of NaN% (improved AQI) compared to previous years: .