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Bolu

Good

Pollution ranking among 81 provinces

Bolu air quality analysis

48
AQI #21 / 81
Dominant Pollutant PM10
48
0 50 100 150 200 300 500

This Week

Pollutant averages

PM10
62.4 µg/m³
0 HKDYY limit (24h): 50 µg/m³
PM2.5
19.4 µg/m³
SO₂
13.0 µg/m³
0 HKDYY limit (1h): 350 µg/m³
NO₂
34.2 µg/m³
0 HKDYY limit (1h): 200 µg/m³
O₃
61.9 µg/m³
0 HKDYY limit (8h): 120 µg/m³
CO
300.6 µg/m³
0 HKDYY limit (8h): 10000 µg/m³

12-Week Trend

Weekly pollutant averages

PM10
74.3 µg/m³ ▲ 55.5
12w ago This week
PM2.5
72.4 µg/m³ ▲ 64.5
12w ago This week
SO₂
11.6 µg/m³ ▼ 1.5
12w ago This week
NO₂
31.3 µg/m³ —
12w ago This week
O₃
64.7 µg/m³ ▼ 9.9
12w ago This week
CO
280.9 µg/m³ ▼ 1.8
12w ago This week

Monthly Comparison

This month vs. same period last year

Pollutant Current Last Year Change
SO₂ 12.4 4.3 +188%
CO 299.6 499.1 -40%
O₃ 65.9 101.4 -35%
NO₂ 33.2 31.0 +7%
PM10 42.3 49.2 -14%
PM2.5 19.6 24.6 -20%

Stations

3 active stations

Hava Kalitesi - Kuzey İç Anadolu THM
Government Station
40.7264, 31.6050
14 PM10
7 PM2.5
10 SO₂
24 NO₂
17 O₃
256 CO
Last updated: 2026-08-01T04:56:44.222000
Kırsal - Kuzey İç Anadolu THM
Government Station
40.6036, 31.2594
23 PM10
11 PM2.5
21 SO₂
173 CO
Last updated: 2026-08-01T05:20:52.845000
Kentsel-Trafik - Kuzey İç Anadolu THM
Government Station
40.7324, 31.5994
31 PM10
13 PM2.5
1 SO₂
30 NO₂
156 CO
Last updated: 2026-08-01T03:25:12.866000
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