Steder i nærheten
Winchendon Center, Massachusetts, forente stater
Pequoig, Massachusetts, forente stater
Old North Ashburnham Station, Massachusetts, forente stater
Nærliggende steder
Mellen Pond, forente stater
Nineteenth Hill, forente stater
Old Centre Historic District, forente stater

Luftkvalitet i Mellen Pond, forente stater

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Forurensende stoffer i Mellen Pond, forente stater

PM10
0.49 μg/ft3
PM25
0.22 μg/ft3
NO2
0.31 ppb
SO2
0.5 ppb
CO
0.19 ppb
O3
Primær forurensningsstoff
63.31 ppb
Lav risikoHøy risiko

Pollenindeks i Mellen Pond, forente stater

Tre
3/5
012345
Ugress
0/5
012345
Gress
1/5
012345

Luftkvalitetsvarsel i Mellen Pond, forente stater

ons. 19. juni
MorgenMiddagstidKveldNatt
Neste dag
Neste dag
Luftkvalitetindeks
41
67
34
25
Neste dag
Pollen

Tre

5
5
3
1

Ugress

0
0
0
0

Gress

1
1
1
1
Neste dag
PM10
0.38 μg/ft3
0.40 μg/ft3
0.18 μg/ft3
0.17 μg/ft3
PM25
0.24 μg/ft3
0.25 μg/ft3
0.09 μg/ft3
0.09 μg/ft3
NO2
2.3 ppb
2.23 ppb
3.61 ppb
4.87 ppb
SO2
1.25 ppb
0.63 ppb
0.23 ppb
0.85 ppb
CO
0.12 ppb
0.12 ppb
0.12 ppb
0.12 ppb
O3
50.97 ppb
55.04 ppb
33.65 ppb
24.7 ppb
Luftkvalitetindeks
25
47
70
42
Pollen

Tre

1
5
2
1

Ugress

0
0
0
0

Gress

1
1
1
1
PM10
0.17 μg/ft3
0.52 μg/ft3
0.38 μg/ft3
0.48 μg/ft3
PM25
0.09 μg/ft3
0.35 μg/ft3
0.21 μg/ft3
0.30 μg/ft3
NO2
4.87 ppb
2.75 ppb
2.99 ppb
11.12 ppb
SO2
0.85 ppb
1.44 ppb
0.66 ppb
0.52 ppb
CO
0.12 ppb
0.15 ppb
0.14 ppb
0.21 ppb
O3
24.7 ppb
57.94 ppb
52.98 ppb
25.38 ppb
Luftkvalitetindeks
47
52
53
40
Pollen

Tre

0
1
1
0

Ugress

0
0
0
0

Gress

0
0
0
0
PM10
0.47 μg/ft3
0.60 μg/ft3
0.56 μg/ft3
0.33 μg/ft3
PM25
0.33 μg/ft3
0.40 μg/ft3
0.36 μg/ft3
0.22 μg/ft3
NO2
4.59 ppb
2.18 ppb
2.39 ppb
3.54 ppb
SO2
0.61 ppb
0.29 ppb
0.33 ppb
0.35 ppb
CO
0.14 ppb
0.14 ppb
0.14 ppb
0.14 ppb
O3
23.52 ppb
42.2 ppb
48.28 ppb
39.06 ppb