Ridgefield, Washington, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
March Air Quality Analysis
Ridgefield, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (14th March):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 35 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 13th Mar - 14th Mar 2026
Ridgefield, Washington, United States
7 AM13th Mar 2026
6 PM
6 AM14th Mar 2026
46AQI
36AQI
50AQI
32AQI
In the last 24 hours,
Ridgefield's AQI reached its highest point of 50 at 9 PM during the Night, while the lowest point, 32, was recorded at 5 AM during the Night between 13th Mar and 14th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
Ridgefield, Washington, United States
7°C3/10°C
6°C4/9°C
7°C5/10°C
5°C2/7°C
3°C1/7°C
2°C0/5°C
3°C1/6°C
3°C0/9°C
6°C3/13°C
8°C5/12°C
7°C5/8°C
6°C5/7°C
5°C1/9°C
5°C0/13°C
6°C1/14°C
7°C1/14°C
9°C3/17°C
10°C7/15°C
10°C5/14°C
10°C8/11°C
8°C6/9°C
8°C6/10°C
12°C10/15°C
9°C3/12°C
5°C2/8°C
5°C1/7°C
8°C5/11°C
9°C7/9°C
11°C10/12°C
7°C4/11°C
55AQI
42AQI
42AQI
37AQI
2026 Days Vs Air Quality
Ridgefield, Washington, United States
95%
69
5%
4
Total number of days with different AQI categories in last 74 days in 2026 (291 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2026, 95% of 74 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Ridgefield, Washington, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
34AQI (US)
21AQI (US)
22AQI (US)
11AQI (US)
21AQI (US)
24AQI (US)
9AQI (US)
14AQI (US)
14AQI (US)
25AQI (US)
31AQI (US)
23AQI (US)
35AQI (US)
26AQI (US)
27AQI (US)
18AQI (US)
19AQI (US)
22AQI (US)
18AQI (US)
25AQI (US)
26AQI (US)
49AQI (US)
54AQI (US)
48AQI (US)
47AQI (US)
47AQI (US)
45AQI (US)
47AQI (US)
52AQI (US)
48AQI (US)
45AQI (US)
49AQI (US)
50AQI (US)
49AQI (US)
48AQI (US)
48AQI (US)
41AQI (US)
42AQI (US)
46AQI (US)
46AQI (US)
48AQI (US)
47AQI (US)
47AQI (US)
54AQI (US)
50AQI (US)
41AQI (US)
45AQI (US)
47AQI (US)
42AQI (US)
43AQI (US)
43AQI (US)
38AQI (US)
38AQI (US)
40AQI (US)
44AQI (US)
40AQI (US)
35AQI (US)
34AQI (US)
39AQI (US)
43AQI (US)
54AQI (US)
46AQI (US)
45AQI (US)
43AQI (US)
38AQI (US)
41AQI (US)
40AQI (US)
40AQI (US)
35AQI (US)
42AQI (US)
41AQI (US)
41AQI (US)
35AQI (US)
31AQI (US)
44AQI (US)
42AQI (US)
No. of days
202638AQI (US)
Highest AQI (US) recorded in
February44AQI (US)
Lowest AQI (US) recorded in
January31AQI (US)
202525AQI (US)
Highest AQI (US) recorded in
October36AQI (US)
Lowest AQI (US) recorded in
May16AQI (US)
202422AQI (US)
Highest AQI (US) recorded in
November28AQI (US)
Lowest AQI (US) recorded in
May16AQI (US)
202324AQI (US)
Highest AQI (US) recorded in
August35AQI (US)
Lowest AQI (US) recorded in
April14AQI (US)
202229AQI (US)
Highest AQI (US) recorded in
October56AQI (US)
Lowest AQI (US) recorded in
April18AQI (US)
202123AQI (US)
Highest AQI (US) recorded in
August27AQI (US)
Lowest AQI (US) recorded in
February18AQI (US)
202031AQI (US)
Highest AQI (US) recorded in
September85AQI (US)
Lowest AQI (US) recorded in
March12AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Ridgefield's annual 2026 AQI (US) (38) shows an average percentage change of 51.4% (worsened AQI (US)) compared to previous years: 2020 (31), 2021 (23), 2022 (29), 2023 (24), 2024 (22), 2025 (25).