Fraser Valley Hava Kirliliği: Gerçek zamanlı Hava Kalitesi Endeksi ve sis uyarısı.

İstasyonlardan gelen güncel veriler: Abbotsford Airport Abbotsford Chilliwack Hope
Fraser Valley için kirlilik ve hava kalitesi tahmini. Bugün 2 Mayıs 2025 Cuma. Fraser Valley için aşağıdaki hava kirliliği değerleri kaydedilmiştir:
  1. kükürt dioksit (SO2) - 0 (Iyi)
  2. azot dioksit (NO2) - 0 (Iyi)
  3. karbon monoksit (CO) - 0 (Iyi)
  4. ozon (O3) - 0 (Iyi)
  5. partikül madde (PM2.5) toz - 3 (Iyi)
  6. partikül madde (PM10) askıda toz - 7 (Iyi)
Fraser Valley için Gerçek Zamanlı Hava Kalitesi Endeksi (AQI), 16 Nisan 2024 Salı: 1.

air quality index: 0
AQI 1 Iyi

bugün Fraser Valley hava kalitesi nedir? hava Fraser Valley 'da kirlendi mi? Duman var mı?

Günümüzde (16 Nisan 2024 Salı) hava kalitesi iyidir. Hava kalitesinin sağlık üzerinde hiçbir etkisi yoktur. Herkes Fraser Valley 'da normal olarak açık hava aktivitelerine devam edebilir.


SO2 kirliliğinin seviyesi nedir? (kükürt dioksit (SO2))
0 (Iyi)

NO2 seviyesi ne kadar yüksek? (azot dioksit (NO2))
0 (Iyi)

CO seviyesi ne kadar yüksek? (karbon monoksit (CO))
0 (Iyi)

Fraser Valley 'da bugün O3 seviyesi nasıl? (ozon (O3))
0 (Iyi)

Fraser Valley 'da PM2.5'in geçerli seviyesi nedir? (partikül madde (PM2.5) toz)
Bugünün PM2.5 seviyesi: 3 (Iyi) Karşılaştırma için, son 7 gün içinde Fraser Valley PM2.5 en yüksek seviyesi oldu: 9 (7 Şubat 2024 Çarşamba) ve en düşük: 2 (9 Nisan 2024 Salı). En yüksek PM2.5 değerleri kaydedildi: 34 (Ağustos 2018). Partikül madde PM2.5 kirliliğinin en düşük seviyesi ayda oluşur: Mart (2.7).

bugün Fraser Valley PM10 seviyesi nedir? (partikül madde (PM10) askıda toz)
Fraser Valley is partikül madde PM10 geçerli düzeyi: 7 (Iyi) En yüksek PM10 değerleri genellikle ay içinde oluşur: 27 (Ağustos 2018). Partikül madde PM10 kirliliğinin en düşük değeri Fraser Valley genellikle kaydedilir: Aralık (5.7).



Geçerli veriler 16 Nisan 2024 Salı 10:00

SO2 0 (Iyi)

NO2 0 (Iyi)

CO 0 (Iyi)

0 (Iyi)

O3 0 (Iyi)

PM2,5 3 (Iyi)

PM10 7 (Iyi)

Son günlerden itibaren hava kirliliği verileri Fraser Valley

index 2024-04-09 2024-04-10 2024-04-11 2024-04-12 2024-04-13 2024-04-14 2024-04-15 2024-04-16 2024-01-31 2024-02-01 2024-02-02 2024-02-03 2024-02-04 2024-02-05 2024-02-06 2024-02-07
co 0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
no2 0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
pm10 5
Good
11
Good
16
Good
7
Good
13
Good
14
Good
10
Good
7
Good
4
Good
6
Good
6
Good
7
Good
7
Good
6
Good
7
Good
12
Good
so2 0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
o3 0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
pm25 2
Good
3
Good
8
Good
5
Good
5
Good
8
Good
6
Good
3
Good
3
Good
3
Good
3
Good
4
Good
5
Good
4
Good
5
Good
9
Good
no 0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
0
Good
data source »
Mart 2016 Mayıs 2020 Fraser Valley hava kirliliği
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03
co:ppm 0.13 (Good) 0.13 (Good) 0.13 (Good) 0.13 (Good) 0.11 (Good) 0.14 (Good) 0.15 (Good) 0.13 (Good) 0.11 (Good) 0.12 (Good) 0.09 (Good) 0.08 (Good) 0.11 (Good) 0.12 (Good) 0.14 (Good) 0.13 (Good) 0.13 (Good) 0.11 (Good) 0.18 (Good) 0.2 (Good) 0.15 (Good) 0.22 (Good) 0.13 (Good) 0.11 (Good) 0.14 (Good) 0.15 (Good) 0.17 (Good) 0.14 (Good) 0.46 (Good) 0.25 (Good) 0.12 (Good) 0.15 (Good) 0.15 (Good) 0.12 (Good) 0.08 (Good) 0.1 (Good) 0.13 (Good) 0.13 (Good) 0.17 (Good) 0.18 (Good) 0.2 (Good) 0.17 (Good) 0.17 (Good) 0.17 (Good) 0.14 (Good) 0.2 (Good) 0.18 (Good) 0.18 (Good) 0.2 (Good) 0.22 (Good) 0.22 (Good)
no2:ppm 0 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good)
o3:ppm 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.02 (Good) 0.02 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.01 (Good) 0.02 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.01 (Good) 0.01 (Good) 0.01 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good)
pm10 11 (Good) 12 (Good) 11 (Good) 7.7 (Good) 6.4 (Good) 7.3 (Good) 14 (Good) 10 (Good) 10 (Good) 16 (Good) 12 (Good) 12 (Good) 16 (Good) 9.8 (Good) 13 (Good) 11 (Good) 8.5 (Good) 5.7 (Good) 7 (Good) 11 (Good) 9.2 (Good) 27 (Moderate) 15 (Good) 10 (Good) 13 (Good) 9.2 (Good) 12 (Good) 7.2 (Good) 7 (Good) 12 (Good) 9.6 (Good) 12 (Good) 23 (Moderate) 20 (Moderate) 17 (Good) 17 (Good) 19 (Good) 8.4 (Good) 6.2 (Good) 11 (Good) 9.7 (Good) 11 (Good) 7.8 (Good) 14 (Good) 17 (Good) 20 (Good) 11 (Good) 13 (Good) 18 (Good) 16 (Good) 10 (Good)
pm25 3.8 (Good) 5 (Good) 6.2 (Good) 4.8 (Good) 3.1 (Good) 4.6 (Good) 7.8 (Good) 5.6 (Good) 3.8 (Good) 6.2 (Good) 4.7 (Good) 4.6 (Good) 7.1 (Good) 4.6 (Good) 7.6 (Good) 5.3 (Good) 5 (Good) 4.4 (Good) 6.3 (Good) 8.7 (Good) 5.8 (Good) 34 (Moderate) 6.7 (Good) 4.4 (Good) 6.4 (Good) 4.9 (Good) 6.9 (Good) 4.4 (Good) 4 (Good) 5.8 (Good) 5.3 (Good) 6.5 (Good) 8.4 (Good) 8.3 (Good) 5.2 (Good) 5.2 (Good) 6.3 (Good) 3.8 (Good) 2.7 (Good) 5.7 (Good) 4.8 (Good) 5 (Good) 3.2 (Good) 4.4 (Good) 4.3 (Good) 5.8 (Good) 3.9 (Good) 4.8 (Good) 6.3 (Good) 8.7 (Good) 4.8 (Good)
so2:ppm 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) - (Good) - (Good) - (Good) 0 (Good) - (Good) 0 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 0 (Good) 0 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 0 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 0 (Good) - (Good) 0 (Good) 0 (Good) 0 (Good) - (Good)
data source »

Yaşam kalitesi Fraser Valley

Şehirde Yeşil ve Parklar

Fraser Valley %75

Amerika Birleşik Devletleri: %70 Venezuela: %41 İzlanda: %72

partikül madde PM2.5

Fraser Valley 7 (Good)

Şehirde vakit geçirmenin keyfi

Fraser Valley %80

Amerika Birleşik Devletleri: %75 Bahamalar: %53 Venezuela: %41 İzlanda: %89

partikül madde PM10

Fraser Valley 13 (Good)

Hava Kirliliği

Fraser Valley %28

Amerika Birleşik Devletleri: %29 Bahamalar: %52 Venezuela: %59 İzlanda: %13

Çöp Öğütme

Fraser Valley %70

Amerika Birleşik Devletleri: %71 Bahamalar: %29 Venezuela: %18 İzlanda: %79

İçme suyunun kullanılabilirliği ve kalitesi

Fraser Valley %83

Amerika Birleşik Devletleri: %71 Bahamalar: %55 Venezuela: %28 İzlanda: %96

Temizlik ve düzenlilik

Fraser Valley %64

Amerika Birleşik Devletleri: %60 Bahamalar: %35 Venezuela: %22 İzlanda: %75

Gürültü ve Işık kirliliği

Fraser Valley %42

Amerika Birleşik Devletleri: %47 Bahamalar: %39 Venezuela: %47 İzlanda: %23

Su Kirliliği

Fraser Valley %29

Amerika Birleşik Devletleri: %44 Bahamalar: %58 Venezuela: %76 İzlanda: %8,4
Source: Numbeo


Abbotsford Airport

16 Nisan 2024 Salı 10:00

SO2 0 (Iyi)

kükürt dioksit (SO2)

NO2 0 (Iyi)

azot dioksit (NO2)

CO 0.2 (Iyi)

karbon monoksit (CO)

0 (Iyi)

index_name_no

O3 0.04 (Iyi)

ozon (O3)

PM2,5 0.9 (Iyi)

partikül madde (PM2.5) toz

PM10 5 (Iyi)

partikül madde (PM10) askıda toz

Abbotsford

16 Nisan 2024 Salı 10:00

0 (Iyi)

index_name_no

PM2,5 1.4 (Iyi)

partikül madde (PM2.5) toz

SO2 0 (Iyi)

kükürt dioksit (SO2)

O3 0.03 (Iyi)

ozon (O3)

NO2 0 (Iyi)

azot dioksit (NO2)

Chilliwack

7 Şubat 2024 Çarşamba 09:00

0 (Iyi)

index_name_no

CO 0.2 (Iyi)

karbon monoksit (CO)

NO2 0.01 (Iyi)

azot dioksit (NO2)

PM2,5 5.9 (Iyi)

partikül madde (PM2.5) toz

SO2 0 (Iyi)

kükürt dioksit (SO2)

O3 0 (Iyi)

ozon (O3)

PM10 9 (Iyi)

partikül madde (PM10) askıda toz

Hope

16 Nisan 2024 Salı 10:00

NO2 0 (Iyi)

azot dioksit (NO2)

O3 0.03 (Iyi)

ozon (O3)

0 (Iyi)

index_name_no

PM2,5 3 (Iyi)

partikül madde (PM2.5) toz

Abbotsford Airport

index 2024-04-16 2024-04-15 2024-04-14 2024-04-13 2024-04-12 2024-04-11 2024-04-10 2024-04-09
co 0.2 0.17 0.21 0.21 0.2 0.23 0.2 0.16
no2 0 0 0.01 0.01 0.01 0.01 0.01 0
pm10 6.8 9.9 14 13 6.9 16 11 5.3
so2 0 0 0 0 0 0 0 0
o3 0.04 0.04 0.02 0.02 0.02 0.02 0.03 0.04
pm25 3.5 5.4 8.6 7.2 6.2 10 3.3 1.5
no 0 0 0 0 0 0 0 0

Abbotsford

index 2024-04-16 2024-04-15 2024-04-14 2024-04-13 2024-04-12 2024-04-11 2024-04-10 2024-04-09
o3 0.04 0.04 0.02 0.02 0.03 0.02 0.03 0.04
pm25 2.9 5.7 8 5.5 3 8.1 2 1.9
no 0 0 0 0 0 0 0 0
no2 0 0 0.01 0.01 0.01 0.01 0.01 0
so2 0 0 0 0 0 0 0 0

Chilliwack

index 2024-02-07 2024-02-06 2024-02-05 2024-02-04 2024-02-03 2024-02-02 2024-02-01 2024-01-31
co 0.32 0.2 0.19 0.27 0.24 0.21 0.2 0.13
pm25 8.8 4.7 3.9 4.9 4.1 2.6 2.9 2.6
no 0.01 0 0 0.01 0.01 0 0.01 0
o3 0 0.02 0.03 0.01 0 0.01 0.01 0.01
so2 0 0 0 0 0 0 0 0
no2 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01
pm10 12 7 6 7.1 7.5 6.2 5.7 4.4

Hope

index 2024-04-16 2024-04-15 2024-04-14 2024-04-13 2024-04-12 2024-04-11 2024-04-10 2024-04-09
pm25 3.4 7.1 7.8 3.6 4.5 4.1 3.2 2.6
no2 0 0 0.01 0.01 0.01 0.01 0.01 0.01
no 0 0 0.01 0 0 0 0 0
o3 0.04 0.04 0.04 0.03 0.03 0.03 0.03 0.03

Abbotsford Airport

2016-03   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03
pm10 11 12 11 7.7 6.4 7.3 14 10 10 16 12 12 16 9.8 13 11 8.5 5.7 7 11 9.2 27 15 10 13 9.2 12 7.2 7 12 9.6 12 23 20 17 17 19 8.4 6.2 11 9.7 11 7.8 14 17 20 11 13 18 16 10
co:ppm 0.13 0.13 0.13 0.13 0.11 0.14 0.15 0.13 0.11 0.12 0.09 0.08 0.11 0.12 0.14 0.13 0.13 0.11 0.18 0.2 0.15 0.22 0.13 0.11 0.14 0.15 0.17 0.14 0.46 0.25 0.12 0.15 0.15 0.12 0.08 0.1 0.13 0.13 0.17 0.18 0.2 0.17 0.17 0.17 0.14 0.2 0.18 0.18 0.2 0.22 0.22
no2:ppm 0 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01
pm25 4 5.8 7.3 5.4 2.9 5.2 8.9 6.3 3.9 6.1 4.1 3.9 6.5 4.4 8.1 5.5 5.7 3.9 6.5 9.3 5.6 22 6.7 4.4 6.4 4.9 6.9 4.4 4 5.8 5.3 6.5 8.4 8.3 5.2 5.2 6.3 3.8 2.7 5.7 4.8 5 3.2 4.4 4.3 5.8 3.9 4.8 6.3 8.7 4.8
o3:ppm 0.03 0.03 0.03 0.02 0.02 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.02 0.02 0.02 0.01 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.02 0.01 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.02 0.02 0.02 0.02 0.01 0.02 0.02 0.02 0.03 0.03 0.03
so2:ppm 0 0 0 0 0 0 0 0 0 - - - 0 - 0 - - - - - - 0 0 - - - - - - - - - - - - - 0 - - - - - - - - 0 - 0 0 0 -

Abbotsford

2016-03   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03
o3:ppm 0.03 0.03 0.02 0.02 0.02 0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.02 0.01 0.02 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.02 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.03 0.03 0.02 0.02 0.02 0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.02
pm25 4.3 4.9 6.6 4.8 3.2 4.6 8.9 5.8 3.3 5.7 3.8 4 6.4 4.1 7.7 5.2 5.7 4 6 8.8 5.1 39 - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Chilliwack

2016-03   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03
o3:ppm 0.03 0.03 0.03 0.02 0.02 0.01 0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.02 0.02 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.03 0.02 0.02 0.02 0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.02
pm25 3.7 4.9 5.6 4.4 2.8 4.3 7.7 5.5 3.9 7.3 6.6 6.3 9.1 5.6 9.4 5.8 4.3 5 7.3 10 6.3 39 - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Hope

2016-03   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03
o3:ppm 0.03 0.03 0.03 0.02 0.02 0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.01 0.01 0.01 0.01 0.01 0.02 0.03 0.02 0.03 0.03 0.02 0.03 0.02 0.02 0.01 0.01 0.02 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.02 0.02 0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.02
pm25 3 4.5 5.1 4.4 3.7 4.2 5.9 4.7 4.1 5.6 4.3 4.3 6.4 4.4 5.1 4.5 4.1 4.8 5.7 6.5 6.3 37 - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

* Pollution data source: https://openaq.org (AirNow) The data is licensed under CC-By 4.0