Bacau, Bacu, Romania Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
June Air Quality Analysis
Bacau, Bacu, Romania
AQI Trends: Highest and Lowest
Same Day Analysis (2nd June):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 26 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Jun - 3rd Jun 2026
Bacau, Bacu, Romania
5 AM2nd Jun 2026
8 PM
4 AM3rd Jun 2026
30AQI
21AQI
28AQI
24AQI
In the last 24 hours,
Bacau's AQI reached its highest point of 30 at 9 AM during the Day, while the lowest point, 21, was recorded at 5 PM during the Day between 2nd Jun and 3rd Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Bacau, Bacu, Romania
16°C8/24°C
16°C7/24°C
15°C7/22°C
15°C10/22°C
14°C13/18°C
14°C10/18°C
15°C8/22°C
16°C11/23°C
9°C8/11°C
11°C5/17°C
13°C5/20°C
14°C8/22°C
13°C8/20°C
15°C8/22°C
16°C12/22°C
15°C11/19°C
15°C15/16°C
17°C14/20°C
17°C13/21°C
17°C10/23°C
18°C11/24°C
19°C11/27°C
20°C14/29°C
14°C9/17°C
12°C6/17°C
13°C8/19°C
13°C8/19°C
16°C12/20°C
14°C13/14°C
17°C13/24°C
33AQI
26AQI
39AQI
33AQI
2026 Days Vs Air Quality
Bacau, Bacu, Romania
63%
95
33%
50
3%
5
Total number of days with different AQI categories in last 154 days in 2026 (211 days remaining)
Under WHO’s Safe Air Quality Limits: 63%
Health Risk Level:
Moderate
In 2026, 63% of 154 days were within WHO’s safe air quality limits, and 37% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Bacau, Bacu, Romania
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
55AQI (US)
46AQI (US)
58AQI (US)
49AQI (US)
66AQI (US)
68AQI (US)
78AQI (US)
61AQI (US)
55AQI (US)
74AQI (US)
74AQI (US)
56AQI (US)
70AQI (US)
96AQI (US)
114AQI (US)
102AQI (US)
101AQI (US)
92AQI (US)
96AQI (US)
114AQI (US)
116AQI (US)
70AQI (US)
46AQI (US)
54AQI (US)
54AQI (US)
40AQI (US)
66AQI (US)
60AQI (US)
51AQI (US)
46AQI (US)
44AQI (US)
52AQI (US)
51AQI (US)
69AQI (US)
80AQI (US)
64AQI (US)
22AQI (US)
42AQI (US)
83AQI (US)
70AQI (US)
55AQI (US)
62AQI (US)
72AQI (US)
58AQI (US)
50AQI (US)
42AQI (US)
42AQI (US)
60AQI (US)
43AQI (US)
72AQI (US)
89AQI (US)
59AQI (US)
60AQI (US)
42AQI (US)
47AQI (US)
27AQI (US)
18AQI (US)
62AQI (US)
66AQI (US)
66AQI (US)
58AQI (US)
59AQI (US)
54AQI (US)
50AQI (US)
40AQI (US)
38AQI (US)
42AQI (US)
40AQI (US)
38AQI (US)
38AQI (US)
41AQI (US)
48AQI (US)
53AQI (US)
51AQI (US)
58AQI (US)
60AQI (US)
48AQI (US)
32AQI (US)
34AQI (US)
38AQI (US)
36AQI (US)
40AQI (US)
46AQI (US)
52AQI (US)
41AQI (US)
43AQI (US)
35AQI (US)
32AQI (US)
34AQI (US)
42AQI (US)
40AQI (US)
34AQI (US)
47AQI (US)
25AQI (US)
36AQI (US)
48AQI (US)
24AQI (US)
20AQI (US)
27AQI (US)
34AQI (US)
34AQI (US)
38AQI (US)
34AQI (US)
26AQI (US)
38AQI (US)
40AQI (US)
28AQI (US)
22AQI (US)
24AQI (US)
20AQI (US)
25AQI (US)
23AQI (US)
26AQI (US)
28AQI (US)
22AQI (US)
26AQI (US)
20AQI (US)
22AQI (US)
27AQI (US)
26AQI (US)
24AQI (US)
29AQI (US)
24AQI (US)
25AQI (US)
22AQI (US)
28AQI (US)
30AQI (US)
31AQI (US)
26AQI (US)
28AQI (US)
28AQI (US)
26AQI (US)
42AQI (US)
51AQI (US)
38AQI (US)
35AQI (US)
45AQI (US)
59AQI (US)
62AQI (US)
40AQI (US)
42AQI (US)
42AQI (US)
36AQI (US)
24AQI (US)
22AQI (US)
19AQI (US)
19AQI (US)
25AQI (US)
27AQI (US)
26AQI (US)
70AQI (US)
56AQI (US)
45AQI (US)
30AQI (US)
33AQI (US)
27AQI (US)
No. of days
202647AQI (US)
Highest AQI (US) recorded in
January70AQI (US)
Lowest AQI (US) recorded in
June27AQI (US)
202550AQI (US)
Highest AQI (US) recorded in
December82AQI (US)
Lowest AQI (US) recorded in
July27AQI (US)
202432AQI (US)
Highest AQI (US) recorded in
November61AQI (US)
Lowest AQI (US) recorded in
March15AQI (US)
202322AQI (US)
Highest AQI (US) recorded in
May30AQI (US)
Lowest AQI (US) recorded in
November12AQI (US)
202227AQI (US)
Highest AQI (US) recorded in
December33AQI (US)
Lowest AQI (US) recorded in
September19AQI (US)
202124AQI (US)
Highest AQI (US) recorded in
October31AQI (US)
Lowest AQI (US) recorded in
September21AQI (US)
202025AQI (US)
Highest AQI (US) recorded in
March35AQI (US)
Lowest AQI (US) recorded in
December18AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Bacau's annual 2026 AQI (US) (47) shows an average percentage change of 68.7% (worsened AQI (US)) compared to previous years: 2020 (25), 2021 (24), 2022 (27), 2023 (22), 2024 (32), 2025 (50).