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Kocaeli

Good

Pollution ranking among 81 provinces

Kocaeli air quality analysis

46
AQI #23 / 81
Dominant Pollutant PM2.5
46
0 50 100 150 200 300 500

This Week

Pollutant averages

PM10
53.4 µg/m³
0 HKDYY limit (24h): 50 µg/m³
PM2.5
28.8 µg/m³
SO₂
16.4 µg/m³
0 HKDYY limit (1h): 350 µg/m³
NO₂
20.1 µg/m³
0 HKDYY limit (1h): 200 µg/m³
O₃
77.8 µg/m³
0 HKDYY limit (8h): 120 µg/m³
CO
1014.6 µg/m³
0 HKDYY limit (8h): 10000 µg/m³

12-Week Trend

Weekly pollutant averages

PM10
53.4 µg/m³ ▲ 7.1
12w ago This week
PM2.5
23.1 µg/m³ ▼ 7.6
12w ago This week
SO₂
16.4 µg/m³ ▲ 0.6
12w ago This week
NO₂
16.1 µg/m³ ▲ 4.5
12w ago This week
O₃
77.8 µg/m³ ▼ 14.6
12w ago This week
CO
794.4 µg/m³ ▲ 166.5
12w ago This week

Monthly Comparison

This month vs. same period last year

Pollutant Current Last Year Change
SO₂ 19.6 17.4 +13%
CO 821.9 2401.5 -66%
O₃ 76.5 67.9 +13%
NO₂ 19.6 32.9 -40%
PM10 70.1 55.5 +26%
PM2.5 44.5 17.1 +160%

Stations

15 active stations

Tesis Etki Alanı - Marmara THM
Government Station
40.8115, 29.5833
15 PM10
4 NO₂
785 CO
Last updated: 2026-08-01T05:51:54.242000
Kentsel-Sanayi - Marmara THM
Government Station
40.8458, 29.4252
16 PM2.5
10 SO₂
49 O₃
Last updated: 2026-08-01T02:23:17.153000
Kentsel-Sanayi - Marmara THM
Government Station
40.7461, 29.7889
36 PM10
11 PM2.5
19 SO₂
39 NO₂
28 O₃
Last updated: 2026-08-01T06:00:57.361000
Isınma - Marmara THM
Government Station
40.7887, 29.5372
19 PM10
2 SO₂
14 NO₂
1550 CO
Last updated: 2026-08-01T06:02:03.389000
Isınma - Marmara THM
Government Station
40.7264, 29.7953
5 PM10
30 PM2.5
9 SO₂
20 NO₂
39 O₃
Last updated: 2026-08-01T05:06:18.755000
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