Air Lookout Data Browser: Boulder Station

ID: 1761

AQSQID: 560350099

Site Name: Boulder

Added: April 21, 2020, 6:24 p.m.

Updated: April 22, 2021, 9:43 a.m.

Location: Boulder (Paradise Rd), WY

Reporting: True, Located: True

Current AQI: 34.0

Boulder (Paradise Rd) WY, US: 42.7186, -109.7531

Date Observed (UTC)	NOX	NO	NOY	NO2	NO2Y	SO2	OZONE	CO	PM10	PM2.5	AQI
April 22, 2021, 6 a.m.	-3.5 ppb (0)	0.3 ppb (1)	2.1 ppb (2)	N/A	N/A	N/A	36.0 ppb (34)	N/A	6.0 μg/m³ (6)	N/A	34.0
April 22, 2021, 5 a.m.	-3.3 ppb (0)	0.2 ppb (1)	2.3 ppb (3)	N/A	N/A	N/A	38.0 ppb (36)	N/A	5.0 μg/m³ (5)	N/A	36.0
April 22, 2021, 4 a.m.	N/A	0.3 ppb (1)	1.5 ppb (2)	N/A	N/A	N/A	39.0 ppb (37)	N/A	7.0 μg/m³ (7)	N/A	37.0
April 22, 2021, 3 a.m.	N/A	0.1 ppb (1)	1.4 ppb (2)	N/A	N/A	N/A	41.0 ppb (38)	N/A	0.0 μg/m³ (0)	N/A	38.0
April 22, 2021, 2 a.m.	N/A	0.2 ppb (1)	1.5 ppb (2)	N/A	N/A	N/A	47.0 ppb (44)	N/A	-2.0 μg/m³ (0)	N/A	44.0
April 22, 2021, 1 a.m.	N/A	0.3 ppb (1)	1.6 ppb (2)	N/A	N/A	N/A	51.0 ppb (48)	N/A	-1.0 μg/m³ (0)	N/A	48.0
April 22, 2021, midnight	N/A	0.4 ppb (1)	1.5 ppb (2)	N/A	N/A	N/A	53.0 ppb (50)	N/A	5.0 μg/m³ (5)	N/A	50.0
April 21, 2021, 11 p.m.	-3.9 ppb (0)	0.2 ppb (1)	1.6 ppb (2)	N/A	N/A	N/A	52.0 ppb (49)	N/A	6.0 μg/m³ (6)	N/A	49.0
April 21, 2021, 10 p.m.	-3.2 ppb (0)	0.4 ppb (1)	1.6 ppb (2)	N/A	N/A	N/A	50.0 ppb (47)	N/A	3.0 μg/m³ (3)	N/A	47.0
April 21, 2021, 9 p.m.	-2.5 ppb (0)	0.2 ppb (1)	1.6 ppb (2)	N/A	N/A	N/A	49.0 ppb (46)	N/A	3.0 μg/m³ (3)	N/A	46.0
April 21, 2021, 8 p.m.	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
April 21, 2021, 7 p.m.	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	0.0 μg/m³ (0)	N/A	0.0
April 21, 2021, 6 p.m.	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	1.0 μg/m³ (1)	N/A	1.0
April 21, 2021, 5 p.m.	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	8.0 μg/m³ (8)	N/A	8.0
April 21, 2021, 4 p.m.	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	12.0 μg/m³ (12)	N/A	12.0
April 21, 2021, 3 p.m.	-1.8 ppb (0)	-0.9 ppb (0)	1.2 ppb (2)	N/A	N/A	N/A	40.0 ppb (38)	N/A	-2.0 μg/m³ (0)	N/A	38.0
April 21, 2021, 2 p.m.	-0.6 ppb (0)	0.0 ppb (0)	1.3 ppb (2)	N/A	N/A	N/A	39.0 ppb (37)	N/A	7.0 μg/m³ (7)	N/A	37.0
April 21, 2021, 1 p.m.	-0.6 ppb (0)	-0.1 ppb (0)	1.0 ppb (1)	0.0 ppb (0)	N/A	N/A	34.0 ppb (32)	N/A	5.0 μg/m³ (5)	N/A	32.0
April 21, 2021, noon	-0.5 ppb (0)	-0.2 ppb (0)	1.1 ppb (2)	0.0 ppb (0)	N/A	N/A	29.0 ppb (27)	N/A	3.0 μg/m³ (3)	N/A	27.0
April 21, 2021, 11 a.m.	-0.6 ppb (0)	0.0 ppb (0)	1.1 ppb (2)	N/A	N/A	N/A	29.0 ppb (27)	N/A	1.0 μg/m³ (1)	N/A	27.0
April 21, 2021, 10 a.m.	-0.6 ppb (0)	-0.2 ppb (0)	1.2 ppb (2)	0.0 ppb (0)	N/A	N/A	30.0 ppb (28)	N/A	3.0 μg/m³ (3)	N/A	28.0
April 21, 2021, 9 a.m.	-0.9 ppb (0)	-0.1 ppb (0)	1.3 ppb (2)	N/A	N/A	N/A	34.0 ppb (32)	N/A	2.0 μg/m³ (2)	N/A	32.0
April 21, 2021, 8 a.m.	-0.9 ppb (0)	-0.2 ppb (0)	1.2 ppb (2)	N/A	N/A	N/A	31.0 ppb (29)	N/A	2.0 μg/m³ (2)	N/A	29.0
April 21, 2021, 7 a.m.	-1.1 ppb (0)	-0.4 ppb (0)	1.1 ppb (2)	N/A	N/A	N/A	28.0 ppb (26)	N/A	2.0 μg/m³ (2)	N/A	26.0
April 21, 2021, 6 a.m.	-1.2 ppb (0)	-0.4 ppb (0)	1.0 ppb (1)	N/A	N/A	N/A	36.0 ppb (34)	N/A	3.0 μg/m³ (3)	N/A	34.0
April 21, 2021, 5 a.m.	-0.6 ppb (0)	0.2 ppb (1)	1.2 ppb (2)	N/A	N/A	N/A	34.0 ppb (32)	N/A	8.0 μg/m³ (8)	N/A	32.0
April 21, 2021, 4 a.m.	-0.8 ppb (0)	0.0 ppb (0)	1.1 ppb (2)	N/A	N/A	N/A	35.0 ppb (33)	N/A	11.0 μg/m³ (11)	N/A	33.0
April 21, 2021, 3 a.m.	-0.9 ppb (0)	-0.2 ppb (0)	1.1 ppb (2)	N/A	N/A	N/A	38.0 ppb (36)	N/A	-1.0 μg/m³ (0)	N/A	36.0
April 21, 2021, 2 a.m.	-0.6 ppb (0)	0.2 ppb (1)	1.0 ppb (1)	N/A	N/A	N/A	43.0 ppb (40)	N/A	2.0 μg/m³ (2)	N/A	40.0
April 21, 2021, 1 a.m.	-1.0 ppb (0)	-0.5 ppb (0)	1.3 ppb (2)	0.0 ppb (0)	N/A	N/A	46.0 ppb (43)	N/A	4.0 μg/m³ (4)	N/A	43.0
April 21, 2021, midnight	0.8 ppb (1)	-0.1 ppb (0)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	49.0 ppb (46)	N/A	4.0 μg/m³ (4)	N/A	46.0
April 20, 2021, 11 p.m.	1.0 ppb (1)	0.0 ppb (0)	1.5 ppb (2)	1.0 ppb (1)	N/A	N/A	47.0 ppb (44)	N/A	3.0 μg/m³ (3)	N/A	44.0
April 20, 2021, 10 p.m.	0.9 ppb (1)	-0.2 ppb (0)	1.6 ppb (2)	1.0 ppb (1)	N/A	N/A	47.0 ppb (44)	N/A	3.0 μg/m³ (3)	N/A	44.0
April 20, 2021, 9 p.m.	1.3 ppb (2)	0.2 ppb (1)	1.7 ppb (2)	1.0 ppb (1)	N/A	N/A	46.0 ppb (43)	N/A	5.0 μg/m³ (5)	N/A	43.0
April 20, 2021, 8 p.m.	0.9 ppb (1)	-0.1 ppb (0)	1.5 ppb (2)	1.0 ppb (1)	N/A	N/A	45.0 ppb (42)	N/A	3.0 μg/m³ (3)	N/A	42.0
April 20, 2021, 7 p.m.	0.8 ppb (1)	-0.3 ppb (0)	1.5 ppb (2)	1.0 ppb (1)	N/A	N/A	44.0 ppb (41)	N/A	6.0 μg/m³ (6)	N/A	41.0
April 20, 2021, 6 p.m.	1.2 ppb (2)	-0.1 ppb (0)	1.5 ppb (2)	1.0 ppb (1)	N/A	N/A	43.0 ppb (40)	N/A	6.0 μg/m³ (6)	N/A	40.0
April 20, 2021, 5 p.m.	1.2 ppb (2)	0.1 ppb (1)	1.7 ppb (2)	1.0 ppb (1)	N/A	N/A	42.0 ppb (39)	N/A	6.0 μg/m³ (6)	N/A	39.0
April 20, 2021, 4 p.m.	1.5 ppb (2)	0.2 ppb (1)	1.7 ppb (2)	1.0 ppb (1)	N/A	N/A	41.0 ppb (38)	N/A	5.0 μg/m³ (5)	N/A	38.0
April 20, 2021, 3 p.m.	1.3 ppb (2)	0.2 ppb (1)	1.5 ppb (2)	1.0 ppb (1)	N/A	N/A	41.0 ppb (38)	N/A	5.0 μg/m³ (5)	N/A	38.0
April 20, 2021, 2 p.m.	1.2 ppb (2)	0.0 ppb (0)	1.7 ppb (2)	1.0 ppb (1)	N/A	N/A	39.0 ppb (37)	N/A	3.0 μg/m³ (3)	N/A	37.0
April 20, 2021, 1 p.m.	1.4 ppb (2)	0.0 ppb (0)	1.9 ppb (2)	1.0 ppb (1)	N/A	N/A	36.0 ppb (34)	N/A	2.0 μg/m³ (2)	N/A	34.0
April 20, 2021, noon	1.3 ppb (2)	0.0 ppb (0)	1.4 ppb (2)	1.0 ppb (1)	N/A	N/A	37.0 ppb (35)	N/A	7.0 μg/m³ (7)	N/A	35.0
April 20, 2021, 11 a.m.	0.7 ppb (1)	-0.3 ppb (0)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	13.0 μg/m³ (13)	N/A	36.0
April 20, 2021, 10 a.m.	0.8 ppb (1)	-0.1 ppb (0)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	15.0 μg/m³ (14)	N/A	36.0
April 20, 2021, 9 a.m.	0.6 ppb (1)	-0.2 ppb (0)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	39.0 ppb (37)	N/A	16.0 μg/m³ (15)	N/A	37.0
April 20, 2021, 8 a.m.	1.0 ppb (1)	0.1 ppb (1)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	11.0 μg/m³ (11)	N/A	36.0
April 20, 2021, 7 a.m.	0.7 ppb (1)	-0.1 ppb (0)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	39.0 ppb (37)	N/A	6.0 μg/m³ (6)	N/A	37.0
April 20, 2021, 6 a.m.	0.5 ppb (1)	-0.3 ppb (0)	1.1 ppb (2)	1.0 ppb (1)	N/A	N/A	40.0 ppb (38)	N/A	5.0 μg/m³ (5)	N/A	38.0
April 20, 2021, 5 a.m.	1.0 ppb (1)	-0.1 ppb (0)	1.1 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	6.0 μg/m³ (6)	N/A	36.0
April 20, 2021, 4 a.m.	1.1 ppb (2)	-0.1 ppb (0)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	4.0 μg/m³ (4)	N/A	36.0
April 20, 2021, 3 a.m.	N/A	N/A	1.5 ppb (2)	N/A	N/A	N/A	N/A	N/A	6.0 μg/m³ (6)	N/A	6.0
April 20, 2021, 2 a.m.	0.4 ppb (1)	-0.5 ppb (0)	0.9 ppb (1)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	5.0 μg/m³ (5)	N/A	36.0
April 20, 2021, 1 a.m.	1.5 ppb (2)	0.0 ppb (0)	1.9 ppb (2)	2.0 ppb (2)	N/A	N/A	38.0 ppb (36)	N/A	1.0 μg/m³ (1)	N/A	36.0
April 20, 2021, midnight	1.3 ppb (2)	0.0 ppb (0)	1.7 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	4.0 μg/m³ (4)	N/A	36.0
April 19, 2021, 11 p.m.	1.2 ppb (2)	0.0 ppb (0)	1.4 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	3.0 μg/m³ (3)	N/A	36.0
April 19, 2021, 10 p.m.	0.9 ppb (1)	-0.3 ppb (0)	1.4 ppb (2)	1.0 ppb (1)	N/A	N/A	39.0 ppb (37)	N/A	5.0 μg/m³ (5)	N/A	37.0
April 19, 2021, 9 p.m.	1.1 ppb (2)	0.0 ppb (0)	1.4 ppb (2)	1.0 ppb (1)	N/A	N/A	39.0 ppb (37)	N/A	5.0 μg/m³ (5)	N/A	37.0
April 19, 2021, 8 p.m.	0.5 ppb (1)	-0.2 ppb (0)	1.5 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	20.0 μg/m³ (19)	N/A	36.0
April 19, 2021, 7 p.m.	0.6 ppb (1)	-0.2 ppb (0)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	35.0 ppb (33)	N/A	1.0 μg/m³ (1)	N/A	33.0
April 19, 2021, 6 p.m.	0.8 ppb (1)	-0.2 ppb (0)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	34.0 ppb (32)	N/A	2.0 μg/m³ (2)	N/A	32.0
April 19, 2021, 5 p.m.	0.9 ppb (1)	-0.1 ppb (0)	1.4 ppb (2)	1.0 ppb (1)	N/A	N/A	33.0 ppb (31)	N/A	8.0 μg/m³ (8)	N/A	31.0
April 19, 2021, 4 p.m.	1.2 ppb (2)	-0.1 ppb (0)	1.8 ppb (2)	1.0 ppb (1)	N/A	N/A	31.0 ppb (29)	N/A	11.0 μg/m³ (11)	N/A	29.0
April 19, 2021, 3 p.m.	1.6 ppb (2)	0.1 ppb (1)	2.0 ppb (2)	1.0 ppb (1)	N/A	N/A	26.0 ppb (25)	N/A	10.0 μg/m³ (10)	N/A	25.0
April 19, 2021, 2 p.m.	2.4 ppb (3)	0.5 ppb (1)	2.4 ppb (3)	2.0 ppb (2)	N/A	N/A	24.0 ppb (23)	N/A	7.0 μg/m³ (7)	N/A	23.0
April 19, 2021, 1 p.m.	1.2 ppb (2)	0.0 ppb (0)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	23.0 ppb (22)	N/A	11.0 μg/m³ (11)	N/A	22.0
April 19, 2021, noon	1.7 ppb (2)	0.0 ppb (0)	1.6 ppb (2)	2.0 ppb (2)	N/A	N/A	24.0 ppb (23)	N/A	15.0 μg/m³ (14)	N/A	23.0
April 19, 2021, 11 a.m.	1.3 ppb (2)	-0.3 ppb (0)	1.6 ppb (2)	2.0 ppb (2)	N/A	N/A	25.0 ppb (24)	N/A	7.0 μg/m³ (7)	N/A	24.0
April 19, 2021, 10 a.m.	1.4 ppb (2)	0.0 ppb (0)	1.4 ppb (2)	1.0 ppb (1)	N/A	N/A	25.0 ppb (24)	N/A	8.0 μg/m³ (8)	N/A	24.0
April 19, 2021, 9 a.m.	0.9 ppb (1)	-0.3 ppb (0)	1.5 ppb (2)	1.0 ppb (1)	N/A	N/A	27.0 ppb (25)	N/A	11.0 μg/m³ (11)	N/A	25.0
April 19, 2021, 8 a.m.	1.5 ppb (2)	0.0 ppb (0)	1.6 ppb (2)	2.0 ppb (2)	N/A	N/A	28.0 ppb (26)	N/A	9.0 μg/m³ (9)	N/A	26.0
April 19, 2021, 7 a.m.	1.6 ppb (2)	0.0 ppb (0)	1.9 ppb (2)	2.0 ppb (2)	N/A	N/A	32.0 ppb (30)	N/A	3.0 μg/m³ (3)	N/A	30.0
April 19, 2021, 6 a.m.	1.2 ppb (2)	-0.2 ppb (0)	1.4 ppb (2)	1.0 ppb (1)	N/A	N/A	29.0 ppb (27)	N/A	3.0 μg/m³ (3)	N/A	27.0
April 19, 2021, 5 a.m.	1.0 ppb (1)	-0.2 ppb (0)	1.6 ppb (2)	1.0 ppb (1)	N/A	N/A	34.0 ppb (32)	N/A	6.0 μg/m³ (6)	N/A	32.0
April 19, 2021, 4 a.m.	1.1 ppb (2)	-0.3 ppb (0)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	36.0 ppb (34)	N/A	7.0 μg/m³ (7)	N/A	34.0
April 19, 2021, 3 a.m.	1.3 ppb (2)	-0.1 ppb (0)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	36.0 ppb (34)	N/A	4.0 μg/m³ (4)	N/A	34.0
April 19, 2021, 2 a.m.	1.1 ppb (2)	-0.1 ppb (0)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	40.0 ppb (38)	N/A	6.0 μg/m³ (6)	N/A	38.0
April 19, 2021, 1 a.m.	0.7 ppb (1)	-0.1 ppb (0)	1.7 ppb (2)	1.0 ppb (1)	N/A	N/A	45.0 ppb (42)	N/A	8.0 μg/m³ (8)	N/A	42.0
April 19, 2021, midnight	0.8 ppb (1)	0.0 ppb (0)	1.9 ppb (2)	1.0 ppb (1)	N/A	N/A	47.0 ppb (44)	N/A	9.0 μg/m³ (9)	N/A	44.0
April 18, 2021, 11 p.m.	0.6 ppb (1)	-0.2 ppb (0)	1.9 ppb (2)	1.0 ppb (1)	N/A	N/A	48.0 ppb (45)	N/A	7.0 μg/m³ (7)	N/A	45.0
April 18, 2021, 10 p.m.	0.5 ppb (1)	-0.4 ppb (0)	1.9 ppb (2)	1.0 ppb (1)	N/A	N/A	47.0 ppb (44)	N/A	9.0 μg/m³ (9)	N/A	44.0
April 18, 2021, 9 p.m.	0.7 ppb (1)	-0.1 ppb (0)	1.9 ppb (2)	1.0 ppb (1)	N/A	N/A	46.0 ppb (43)	N/A	9.0 μg/m³ (9)	N/A	43.0
April 18, 2021, 8 p.m.	0.8 ppb (1)	0.0 ppb (0)	2.0 ppb (2)	1.0 ppb (1)	N/A	N/A	46.0 ppb (43)	N/A	13.0 μg/m³ (13)	N/A	43.0
April 18, 2021, 7 p.m.	0.6 ppb (1)	-0.4 ppb (0)	2.0 ppb (2)	1.0 ppb (1)	N/A	N/A	46.0 ppb (43)	N/A	6.0 μg/m³ (6)	N/A	43.0
April 18, 2021, 6 p.m.	0.6 ppb (1)	-0.2 ppb (0)	2.2 ppb (3)	1.0 ppb (1)	N/A	N/A	46.0 ppb (43)	N/A	9.0 μg/m³ (9)	N/A	43.0
April 18, 2021, 5 p.m.	0.7 ppb (1)	-0.2 ppb (0)	2.0 ppb (2)	1.0 ppb (1)	N/A	N/A	45.0 ppb (42)	N/A	15.0 μg/m³ (14)	N/A	42.0
April 18, 2021, 4 p.m.	0.7 ppb (1)	-0.1 ppb (0)	1.5 ppb (2)	1.0 ppb (1)	N/A	N/A	42.0 ppb (39)	N/A	12.0 μg/m³ (12)	N/A	39.0
April 18, 2021, 3 p.m.	0.8 ppb (1)	0.0 ppb (0)	1.6 ppb (2)	1.0 ppb (1)	N/A	N/A	41.0 ppb (38)	N/A	9.0 μg/m³ (9)	N/A	38.0
April 18, 2021, 2 p.m.	0.7 ppb (1)	-0.1 ppb (0)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	35.0 ppb (33)	N/A	8.0 μg/m³ (8)	N/A	33.0
April 18, 2021, 1 p.m.	0.6 ppb (1)	-0.2 ppb (0)	0.8 ppb (1)	1.0 ppb (1)	N/A	N/A	28.0 ppb (26)	N/A	8.0 μg/m³ (8)	N/A	26.0
April 18, 2021, noon	0.9 ppb (1)	-0.1 ppb (0)	1.0 ppb (1)	1.0 ppb (1)	N/A	N/A	28.0 ppb (26)	N/A	1.0 μg/m³ (1)	N/A	26.0
April 18, 2021, 11 a.m.	1.0 ppb (1)	0.0 ppb (0)	1.4 ppb (2)	1.0 ppb (1)	N/A	N/A	29.0 ppb (27)	N/A	0.0 μg/m³ (0)	N/A	27.0
April 18, 2021, 10 a.m.	0.8 ppb (1)	-0.3 ppb (0)	1.4 ppb (2)	1.0 ppb (1)	N/A	N/A	30.0 ppb (28)	N/A	0.0 μg/m³ (0)	N/A	28.0
April 18, 2021, 9 a.m.	0.6 ppb (1)	-0.4 ppb (0)	1.5 ppb (2)	1.0 ppb (1)	N/A	N/A	30.0 ppb (28)	N/A	5.0 μg/m³ (5)	N/A	28.0
April 18, 2021, 8 a.m.	0.8 ppb (1)	-0.2 ppb (0)	1.7 ppb (2)	1.0 ppb (1)	N/A	N/A	32.0 ppb (30)	N/A	8.0 μg/m³ (8)	N/A	30.0
April 18, 2021, 7 a.m.	1.1 ppb (2)	0.0 ppb (0)	1.9 ppb (2)	1.0 ppb (1)	N/A	N/A	35.0 ppb (33)	N/A	7.0 μg/m³ (7)	N/A	33.0
April 18, 2021, 6 a.m.	1.9 ppb (2)	-0.1 ppb (0)	2.4 ppb (3)	2.0 ppb (2)	N/A	N/A	34.0 ppb (32)	N/A	11.0 μg/m³ (11)	N/A	32.0
April 18, 2021, 5 a.m.	1.3 ppb (2)	-0.3 ppb (0)	1.8 ppb (2)	2.0 ppb (2)	N/A	N/A	35.0 ppb (33)	N/A	5.0 μg/m³ (5)	N/A	33.0
April 18, 2021, 4 a.m.	1.0 ppb (1)	-0.1 ppb (0)	2.0 ppb (2)	1.0 ppb (1)	N/A	N/A	39.0 ppb (37)	N/A	6.0 μg/m³ (6)	N/A	37.0
April 18, 2021, 3 a.m.	0.8 ppb (1)	-0.2 ppb (0)	1.9 ppb (2)	1.0 ppb (1)	N/A	N/A	43.0 ppb (40)	N/A	8.0 μg/m³ (8)	N/A	40.0
April 18, 2021, 2 a.m.	0.5 ppb (1)	-0.5 ppb (0)	2.1 ppb (2)	1.0 ppb (1)	N/A	N/A	48.0 ppb (45)	N/A	4.0 μg/m³ (4)	N/A	45.0
April 18, 2021, 1 a.m.	0.5 ppb (1)	-0.3 ppb (0)	1.7 ppb (2)	1.0 ppb (1)	N/A	N/A	49.0 ppb (46)	N/A	3.0 μg/m³ (3)	N/A	46.0
April 18, 2021, midnight	0.5 ppb (1)	-0.2 ppb (0)	1.6 ppb (2)	1.0 ppb (1)	N/A	N/A	50.0 ppb (47)	N/A	5.0 μg/m³ (5)	N/A	47.0
April 17, 2021, 11 p.m.	0.4 ppb (1)	-0.4 ppb (0)	1.5 ppb (2)	1.0 ppb (1)	N/A	N/A	49.0 ppb (46)	N/A	7.0 μg/m³ (7)	N/A	46.0
April 17, 2021, 10 p.m.	0.9 ppb (1)	0.1 ppb (1)	1.5 ppb (2)	1.0 ppb (1)	N/A	N/A	49.0 ppb (46)	N/A	6.0 μg/m³ (6)	N/A	46.0
April 17, 2021, 9 p.m.	0.4 ppb (1)	-0.3 ppb (0)	1.4 ppb (2)	1.0 ppb (1)	N/A	N/A	48.0 ppb (45)	N/A	3.0 μg/m³ (3)	N/A	45.0
April 17, 2021, 8 p.m.	0.4 ppb (1)	-0.3 ppb (0)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	48.0 ppb (45)	N/A	0.0 μg/m³ (0)	N/A	45.0
April 17, 2021, 7 p.m.	0.6 ppb (1)	-0.1 ppb (0)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	48.0 ppb (45)	N/A	0.0 μg/m³ (0)	N/A	45.0
April 17, 2021, 6 p.m.	0.7 ppb (1)	0.0 ppb (0)	1.1 ppb (2)	1.0 ppb (1)	N/A	N/A	46.0 ppb (43)	N/A	4.0 μg/m³ (4)	N/A	43.0
April 17, 2021, 5 p.m.	0.1 ppb (1)	-0.6 ppb (0)	1.1 ppb (2)	1.0 ppb (1)	N/A	N/A	47.0 ppb (44)	N/A	7.0 μg/m³ (7)	N/A	44.0
April 17, 2021, 4 p.m.	1.0 ppb (1)	0.1 ppb (1)	1.0 ppb (1)	1.0 ppb (1)	N/A	N/A	44.0 ppb (41)	N/A	10.0 μg/m³ (10)	N/A	41.0
April 17, 2021, 3 p.m.	1.5 ppb (2)	0.5 ppb (1)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	32.0 ppb (30)	N/A	8.0 μg/m³ (8)	N/A	30.0
April 17, 2021, 2 p.m.	0.9 ppb (1)	0.0 ppb (0)	0.9 ppb (1)	1.0 ppb (1)	N/A	N/A	33.0 ppb (31)	N/A	8.0 μg/m³ (8)	N/A	31.0
April 17, 2021, 1 p.m.	0.8 ppb (1)	-0.2 ppb (0)	0.7 ppb (1)	1.0 ppb (1)	N/A	N/A	32.0 ppb (30)	N/A	1.0 μg/m³ (1)	N/A	30.0
April 17, 2021, noon	0.4 ppb (1)	-0.4 ppb (0)	0.7 ppb (1)	1.0 ppb (1)	N/A	N/A	32.0 ppb (30)	N/A	2.0 μg/m³ (2)	N/A	30.0
April 17, 2021, 11 a.m.	0.6 ppb (1)	-0.2 ppb (0)	0.8 ppb (1)	1.0 ppb (1)	N/A	N/A	26.0 ppb (25)	N/A	5.0 μg/m³ (5)	N/A	25.0
April 17, 2021, 10 a.m.	0.8 ppb (1)	-0.2 ppb (0)	0.9 ppb (1)	1.0 ppb (1)	N/A	N/A	24.0 ppb (23)	N/A	6.0 μg/m³ (6)	N/A	23.0
April 17, 2021, 9 a.m.	0.8 ppb (1)	-0.1 ppb (0)	0.8 ppb (1)	1.0 ppb (1)	N/A	N/A	28.0 ppb (26)	N/A	4.0 μg/m³ (4)	N/A	26.0
April 17, 2021, 8 a.m.	1.2 ppb (2)	-0.2 ppb (0)	0.9 ppb (1)	1.0 ppb (1)	N/A	N/A	25.0 ppb (24)	N/A	0.0 μg/m³ (0)	N/A	24.0
April 17, 2021, 7 a.m.	1.4 ppb (2)	-0.1 ppb (0)	1.4 ppb (2)	2.0 ppb (2)	N/A	N/A	29.0 ppb (27)	N/A	2.0 μg/m³ (2)	N/A	27.0
April 17, 2021, 6 a.m.	1.7 ppb (2)	0.0 ppb (0)	1.6 ppb (2)	2.0 ppb (2)	N/A	N/A	24.0 ppb (23)	N/A	4.0 μg/m³ (4)	N/A	23.0
April 17, 2021, 5 a.m.	2.3 ppb (3)	-0.2 ppb (0)	2.4 ppb (3)	3.0 ppb (3)	N/A	N/A	27.0 ppb (25)	N/A	4.0 μg/m³ (4)	N/A	25.0
April 17, 2021, 4 a.m.	2.5 ppb (3)	-0.2 ppb (0)	2.8 ppb (3)	3.0 ppb (3)	N/A	N/A	30.0 ppb (28)	N/A	3.0 μg/m³ (3)	N/A	28.0
April 17, 2021, 3 a.m.	0.5 ppb (1)	-0.1 ppb (0)	0.6 ppb (1)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	-2.0 μg/m³ (0)	N/A	36.0
April 17, 2021, 2 a.m.	0.4 ppb (1)	-0.2 ppb (0)	0.6 ppb (1)	1.0 ppb (1)	N/A	N/A	39.0 ppb (37)	N/A	-3.0 μg/m³ (0)	N/A	37.0
April 17, 2021, 1 a.m.	0.2 ppb (1)	-0.4 ppb (0)	0.5 ppb (1)	1.0 ppb (1)	N/A	N/A	40.0 ppb (38)	N/A	-1.0 μg/m³ (0)	N/A	38.0
April 17, 2021, midnight	0.8 ppb (1)	0.1 ppb (1)	0.8 ppb (1)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	2.0 μg/m³ (2)	N/A	36.0
April 16, 2021, 11 p.m.	0.8 ppb (1)	-0.2 ppb (0)	1.1 ppb (2)	1.0 ppb (1)	N/A	N/A	37.0 ppb (35)	N/A	2.0 μg/m³ (2)	N/A	35.0
April 16, 2021, 10 p.m.	0.9 ppb (1)	0.1 ppb (1)	1.1 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	2.0 μg/m³ (2)	N/A	36.0
April 16, 2021, 9 p.m.	0.8 ppb (1)	-0.2 ppb (0)	1.0 ppb (1)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	-1.0 μg/m³ (0)	N/A	36.0
April 16, 2021, 8 p.m.	1.0 ppb (1)	0.0 ppb (0)	1.0 ppb (1)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	1.0 μg/m³ (1)	N/A	36.0
April 16, 2021, 7 p.m.	0.9 ppb (1)	-0.1 ppb (0)	1.0 ppb (1)	1.0 ppb (1)	N/A	N/A	37.0 ppb (35)	N/A	2.0 μg/m³ (2)	N/A	35.0
April 16, 2021, 6 p.m.	1.1 ppb (2)	0.0 ppb (0)	1.0 ppb (1)	1.0 ppb (1)	N/A	N/A	36.0 ppb (34)	N/A	4.0 μg/m³ (4)	N/A	34.0
April 16, 2021, 5 p.m.	1.2 ppb (2)	-0.1 ppb (0)	0.9 ppb (1)	1.0 ppb (1)	N/A	N/A	34.0 ppb (32)	N/A	7.0 μg/m³ (7)	N/A	32.0
April 16, 2021, 4 p.m.	1.2 ppb (2)	0.0 ppb (0)	0.8 ppb (1)	1.0 ppb (1)	N/A	N/A	33.0 ppb (31)	N/A	4.0 μg/m³ (4)	N/A	31.0
April 16, 2021, 3 p.m.	1.5 ppb (2)	0.3 ppb (1)	0.9 ppb (1)	1.0 ppb (1)	N/A	N/A	33.0 ppb (31)	N/A	2.0 μg/m³ (2)	N/A	31.0
April 16, 2021, 2 p.m.	1.3 ppb (2)	0.0 ppb (0)	1.1 ppb (2)	1.0 ppb (1)	N/A	N/A	31.0 ppb (29)	N/A	1.0 μg/m³ (1)	N/A	29.0
April 16, 2021, 1 p.m.	1.4 ppb (2)	0.2 ppb (1)	0.8 ppb (1)	1.0 ppb (1)	N/A	N/A	30.0 ppb (28)	N/A	1.0 μg/m³ (1)	N/A	28.0
April 16, 2021, noon	0.6 ppb (1)	-0.6 ppb (0)	0.9 ppb (1)	1.0 ppb (1)	N/A	N/A	31.0 ppb (29)	N/A	3.0 μg/m³ (3)	N/A	29.0
April 16, 2021, 11 a.m.	1.4 ppb (2)	-0.2 ppb (0)	1.4 ppb (2)	2.0 ppb (2)	N/A	N/A	31.0 ppb (29)	N/A	0.0 μg/m³ (0)	N/A	29.0
April 16, 2021, 10 a.m.	1.9 ppb (2)	0.1 ppb (1)	1.6 ppb (2)	2.0 ppb (2)	N/A	N/A	30.0 ppb (28)	N/A	0.0 μg/m³ (0)	N/A	28.0
April 16, 2021, 9 a.m.	1.0 ppb (1)	-0.1 ppb (0)	1.1 ppb (2)	1.0 ppb (1)	N/A	N/A	30.0 ppb (28)	N/A	3.0 μg/m³ (3)	N/A	28.0
April 16, 2021, 8 a.m.	1.4 ppb (2)	0.2 ppb (1)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	30.0 ppb (28)	N/A	3.0 μg/m³ (3)	N/A	28.0
April 16, 2021, 7 a.m.	1.0 ppb (1)	-0.2 ppb (0)	1.0 ppb (1)	1.0 ppb (1)	N/A	N/A	31.0 ppb (29)	N/A	2.0 μg/m³ (2)	N/A	29.0
April 16, 2021, 6 a.m.	0.7 ppb (1)	-0.4 ppb (0)	1.1 ppb (2)	1.0 ppb (1)	N/A	N/A	33.0 ppb (31)	N/A	2.0 μg/m³ (2)	N/A	31.0
April 16, 2021, 5 a.m.	1.1 ppb (2)	-0.1 ppb (0)	1.1 ppb (2)	1.0 ppb (1)	N/A	N/A	35.0 ppb (33)	N/A	0.0 μg/m³ (0)	N/A	33.0
April 16, 2021, 4 a.m.	0.8 ppb (1)	-0.1 ppb (0)	1.1 ppb (2)	1.0 ppb (1)	N/A	N/A	36.0 ppb (34)	N/A	3.0 μg/m³ (3)	N/A	34.0
April 16, 2021, 3 a.m.	1.1 ppb (2)	0.0 ppb (0)	1.5 ppb (2)	1.0 ppb (1)	N/A	N/A	35.0 ppb (33)	N/A	4.0 μg/m³ (4)	N/A	33.0
April 16, 2021, 2 a.m.	0.8 ppb (1)	-0.2 ppb (0)	1.0 ppb (1)	1.0 ppb (1)	N/A	N/A	36.0 ppb (34)	N/A	1.0 μg/m³ (1)	N/A	34.0
April 16, 2021, 1 a.m.	0.6 ppb (1)	-0.3 ppb (0)	0.9 ppb (1)	1.0 ppb (1)	N/A	N/A	37.0 ppb (35)	N/A	2.0 μg/m³ (2)	N/A	35.0
April 16, 2021, midnight	1.0 ppb (1)	0.1 ppb (1)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	36.0 ppb (34)	N/A	7.0 μg/m³ (7)	N/A	34.0
April 15, 2021, 11 p.m.	1.1 ppb (2)	0.0 ppb (0)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	37.0 ppb (35)	N/A	9.0 μg/m³ (9)	N/A	35.0
April 15, 2021, 10 p.m.	1.1 ppb (2)	0.0 ppb (0)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	4.0 μg/m³ (4)	N/A	36.0
April 15, 2021, 9 p.m.	1.1 ppb (2)	-0.1 ppb (0)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	39.0 ppb (37)	N/A	6.0 μg/m³ (6)	N/A	37.0
April 15, 2021, 8 p.m.	0.9 ppb (1)	-0.1 ppb (0)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	39.0 ppb (37)	N/A	7.0 μg/m³ (7)	N/A	37.0
April 15, 2021, 7 p.m.	0.9 ppb (1)	-0.2 ppb (0)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	8.0 μg/m³ (8)	N/A	36.0
April 15, 2021, 6 p.m.	1.3 ppb (2)	0.2 ppb (1)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	5.0 μg/m³ (5)	N/A	36.0
April 15, 2021, 5 p.m.	1.3 ppb (2)	0.1 ppb (1)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	38.0 ppb (36)	N/A	8.0 μg/m³ (8)	N/A	36.0
April 15, 2021, 4 p.m.	1.6 ppb (2)	0.2 ppb (1)	1.4 ppb (2)	1.0 ppb (1)	N/A	N/A	37.0 ppb (35)	N/A	7.0 μg/m³ (7)	N/A	35.0
April 15, 2021, 3 p.m.	1.4 ppb (2)	0.0 ppb (0)	1.2 ppb (2)	1.0 ppb (1)	N/A	N/A	36.0 ppb (34)	N/A	7.0 μg/m³ (7)	N/A	34.0
April 15, 2021, 2 p.m.	0.7 ppb (1)	-0.2 ppb (0)	0.9 ppb (1)	1.0 ppb (1)	N/A	N/A	35.0 ppb (33)	N/A	4.0 μg/m³ (4)	N/A	33.0
April 15, 2021, 1 p.m.	1.0 ppb (1)	-0.1 ppb (0)	1.3 ppb (2)	1.0 ppb (1)	N/A	N/A	31.0 ppb (29)	N/A	4.0 μg/m³ (4)	N/A	29.0
April 15, 2021, noon	0.9 ppb (1)	-0.1 ppb (0)	1.1 ppb (2)	1.0 ppb (1)	N/A	N/A	32.0 ppb (30)	N/A	8.0 μg/m³ (8)	N/A	30.0
April 15, 2021, 11 a.m.	1.2 ppb (2)	0.1 ppb (1)	1.0 ppb (1)	1.0 ppb (1)	N/A	N/A	33.0 ppb (31)	N/A	7.0 μg/m³ (7)	N/A	31.0
April 15, 2021, 10 a.m.	0.9 ppb (1)	-0.1 ppb (0)	1.0 ppb (1)	1.0 ppb (1)	N/A	N/A	35.0 ppb (33)	N/A	2.0 μg/m³ (2)	N/A	33.0
April 15, 2021, 9 a.m.	0.8 ppb (1)	-0.4 ppb (0)	0.9 ppb (1)	1.0 ppb (1)	N/A	N/A	34.0 ppb (32)	N/A	2.0 μg/m³ (2)	N/A	32.0
April 15, 2021, 8 a.m.	0.9 ppb (1)	-0.2 ppb (0)	0.9 ppb (1)	1.0 ppb (1)	N/A	N/A	35.0 ppb (33)	N/A	5.0 μg/m³ (5)	N/A	33.0
April 15, 2021, 7 a.m.	0.9 ppb (1)	-0.2 ppb (0)	1.0 ppb (1)	1.0 ppb (1)	N/A	N/A	34.0 ppb (32)	N/A	6.0 μg/m³ (6)	N/A	32.0

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