AQSQID: 560350099

Site Name: Boulder

Location: Boulder (Paradise Rd), WY

Reporting: True, Located: True

Current AQI: 28.0

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

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 1, 2020, noon 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (28) N/A 1.0 μg/m3 (1) N/A 28.0
 
April 1, 2020, 11 a.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) N/A 25.0
 
April 1, 2020, 10 a.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (27) N/A 3.0 μg/m3 (3) N/A 27.0
 
April 1, 2020, 9 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A 5.0 μg/m3 (5) N/A 24.0
 
April 1, 2020, 8 a.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 30.0 ppb (23) N/A 2.0 μg/m3 (2) N/A 23.0
 
April 1, 2020, 7 a.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (26) N/A -2.0 μg/m3 (0) N/A 26.0
 
April 1, 2020, 6 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (27) N/A -1.0 μg/m3 (0) N/A 27.0
 
April 1, 2020, 5 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (26) N/A -1.0 μg/m3 (0) N/A 26.0
 
April 1, 2020, 4 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (26) N/A 1.0 μg/m3 (1) N/A 26.0
 
April 1, 2020, 3 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A 2.0 μg/m3 (2) N/A 30.0
 
April 1, 2020, 2 a.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A 2.0 μg/m3 (2) N/A 32.0
 
April 1, 2020, 1 a.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) N/A 33.0
 
April 1, 2020, midnight 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A 4.0 μg/m3 (4) N/A 35.0
 
March 31, 2020, 11 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A 4.0 μg/m3 (4) N/A 35.0
 
March 31, 2020, 10 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A 0.0 μg/m3 (0) N/A 35.0
 
March 31, 2020, 9 p.m. 0.5 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 5.0 μg/m3 (5) N/A 36.0
 
March 31, 2020, 8 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) N/A 36.0
 
March 31, 2020, 7 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A 3.0 μg/m3 (3) N/A 38.0
 
March 31, 2020, 6 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A 3.0 μg/m3 (3) N/A 34.0
 
March 31, 2020, 5 p.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A 3.0 μg/m3 (3) N/A 31.0
 
March 31, 2020, 4 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (29) N/A 4.0 μg/m3 (4) N/A 29.0
 
March 31, 2020, 3 p.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A 6.0 μg/m3 (5) N/A 24.0
 
March 31, 2020, 2 p.m. 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 27.0 ppb (21) N/A 3.0 μg/m3 (3) N/A 21.0
 
March 31, 2020, 1 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A 2.0 μg/m3 (2) N/A 24.0
 
March 31, 2020, noon 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A 3.0 μg/m3 (3) N/A 24.0
 
March 31, 2020, 11 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A 4.0 μg/m3 (4) N/A 27.0
 
March 31, 2020, 10 a.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A 1.0 μg/m3 (1) N/A 27.0
 
March 31, 2020, 9 a.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) N/A 3.0 μg/m3 (3) N/A 26.0
 
March 31, 2020, 8 a.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) N/A 5.0 μg/m3 (5) N/A 25.0
 
March 31, 2020, 7 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A 3.0 μg/m3 (3) N/A 23.0
 
March 31, 2020, 6 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) N/A 4.0 μg/m3 (4) N/A 26.0
 
March 31, 2020, 5 a.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A 1.0 μg/m3 (1) N/A 27.0
 
March 31, 2020, 4 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A 1.0 μg/m3 (1) N/A 29.0
 
March 31, 2020, 3 a.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A 4.0 μg/m3 (4) N/A 28.0
 
March 31, 2020, 2 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A 0.0 μg/m3 (0) N/A 32.0
 
March 31, 2020, 1 a.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A 0.0 μg/m3 (0) N/A 35.0
 
March 31, 2020, midnight 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A 3.0 μg/m3 (3) N/A 35.0
 
March 30, 2020, 11 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A 2.0 μg/m3 (2) N/A 35.0
 
March 30, 2020, 10 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A 1.0 μg/m3 (1) N/A 35.0
 
March 30, 2020, 9 p.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A 3.0 μg/m3 (3) N/A 35.0
 
March 30, 2020, 8 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A 4.0 μg/m3 (4) N/A 35.0
 
March 30, 2020, 7 p.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 5.0 μg/m3 (5) N/A 36.0
 
March 30, 2020, 6 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 6.0 μg/m3 (5) N/A 36.0
 
March 30, 2020, 5 p.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A 7.0 μg/m3 (6) N/A 32.0
 
March 30, 2020, 4 p.m. 1.5 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (22) N/A 7.0 μg/m3 (6) N/A 22.0
 
March 30, 2020, 3 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A 8.0 μg/m3 (7) N/A 25.0
 
March 30, 2020, 2 p.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (27) N/A 2.0 μg/m3 (2) N/A 27.0
 
March 30, 2020, 1 p.m. 0.6 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (28) N/A 0.0 μg/m3 (0) N/A 28.0
 
March 30, 2020, noon 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (25) N/A 1.0 μg/m3 (1) N/A 25.0
 
March 30, 2020, 11 a.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (26) N/A 3.0 μg/m3 (3) N/A 26.0
 
March 30, 2020, 10 a.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (27) N/A 1.0 μg/m3 (1) N/A 27.0
 
March 30, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) N/A 5.0
 
March 30, 2020, 8 a.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A 8.0 μg/m3 (7) N/A 24.0
 
March 30, 2020, 7 a.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (25) N/A 0.0 μg/m3 (0) N/A 25.0
 
March 30, 2020, 6 a.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (25) N/A 4.0 μg/m3 (4) N/A 25.0
 
March 30, 2020, 5 a.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) N/A 25.0
 
March 30, 2020, 4 a.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A 2.0 μg/m3 (2) N/A 32.0
 
March 30, 2020, 3 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A 3.0 μg/m3 (3) N/A 32.0
 
March 30, 2020, 2 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A 3.0 μg/m3 (3) N/A 33.0
 
March 30, 2020, 1 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A 2.0 μg/m3 (2) N/A 34.0
 
March 30, 2020, midnight 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) N/A 34.0
 
March 29, 2020, 11 p.m. 0.6 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A -2.0 μg/m3 (0) N/A 35.0
 
March 29, 2020, 10 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A -1.0 μg/m3 (0) N/A 35.0
 
March 29, 2020, 9 p.m. 0.6 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A 3.0 μg/m3 (3) N/A 35.0
 
March 29, 2020, 8 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A 3.0 μg/m3 (3) N/A 35.0
 
March 29, 2020, 7 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) N/A 33.0
 
March 29, 2020, 6 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) N/A 33.0
 
March 29, 2020, 5 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 6.0 μg/m3 (5) N/A 30.0
 
March 29, 2020, 4 p.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) N/A 25.0
 
March 29, 2020, 3 p.m. 2.5 ppb (2) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (21) N/A 6.0 μg/m3 (5) N/A 21.0
 
March 29, 2020, 2 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 25.0 ppb (19) N/A 2.0 μg/m3 (2) N/A 19.0
 
March 29, 2020, 1 p.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 26.0 ppb (20) N/A 0.0 μg/m3 (0) N/A 20.0
 
March 29, 2020, noon 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (22) N/A 4.0 μg/m3 (4) N/A 22.0
 
March 29, 2020, 11 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A 4.0 μg/m3 (4) N/A 23.0
 
March 29, 2020, 10 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (22) N/A 2.0 μg/m3 (2) N/A 22.0
 
March 29, 2020, 9 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A 4.0 μg/m3 (4) N/A 24.0
 
March 29, 2020, 8 a.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) N/A 2.0 μg/m3 (2) N/A 25.0
 
March 29, 2020, 7 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) N/A 3.0 μg/m3 (3) N/A 26.0
 
March 29, 2020, 6 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) N/A 6.0 μg/m3 (5) N/A 26.0
 
March 29, 2020, 5 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A 8.0 μg/m3 (7) N/A 29.0
 
March 29, 2020, 4 a.m. 1.1 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A 6.0 μg/m3 (5) N/A 29.0
 
March 29, 2020, 3 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A 4.0 μg/m3 (4) N/A 32.0
 
March 29, 2020, 2 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) N/A 33.0
 
March 29, 2020, 1 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A 4.0 μg/m3 (4) N/A 34.0
 
March 29, 2020, midnight 0.6 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A 3.0 μg/m3 (3) N/A 34.0
 
March 28, 2020, 11 p.m. 0.6 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) N/A 34.0
 
March 28, 2020, 10 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A 0.0 μg/m3 (0) N/A 35.0
 
March 28, 2020, 9 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A 2.0 μg/m3 (2) N/A 35.0
 
March 28, 2020, 8 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A 1.0 μg/m3 (1) N/A 35.0
 
March 28, 2020, 7 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A 4.0 μg/m3 (4) N/A 35.0
 
March 28, 2020, 6 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 8.0 μg/m3 (7) N/A 34.0
 
March 28, 2020, 5 p.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 9.0 μg/m3 (8) N/A 34.0
 
March 28, 2020, 4 p.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A 8.0 μg/m3 (7) N/A 33.0
 
March 28, 2020, 3 p.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A 1.0 μg/m3 (1) N/A 32.0
 
March 28, 2020, 2 p.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A 4.0 μg/m3 (4) N/A 29.0
 
March 28, 2020, 1 p.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 6.0 μg/m3 (5) N/A 30.0
 
March 28, 2020, noon 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) N/A 30.0
 
March 28, 2020, 11 a.m. 0.5 ppb (0) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A 4.0 μg/m3 (4) N/A 29.0
 
March 28, 2020, 10 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) N/A 30.0
 
March 28, 2020, 9 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) N/A 32.0
 
March 28, 2020, 8 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A 2.0 μg/m3 (2) N/A 32.0
 
March 28, 2020, 7 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A 3.0 μg/m3 (3) N/A 32.0
 
March 28, 2020, 6 a.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) N/A 34.0
 
March 28, 2020, 5 a.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) N/A 34.0
 
March 28, 2020, 4 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A 3.0 μg/m3 (3) N/A 33.0
 
March 28, 2020, 3 a.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A 6.0 μg/m3 (5) N/A 33.0
 
March 28, 2020, 2 a.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A 2.0 μg/m3 (2) N/A 34.0
 
March 28, 2020, 1 a.m. 0.5 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A 2.0 μg/m3 (2) N/A 38.0
 
March 28, 2020, midnight 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A 5.0 μg/m3 (5) N/A 40.0
 
March 27, 2020, 11 p.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A 4.0 μg/m3 (4) N/A 39.0
 
March 27, 2020, 10 p.m. 0.5 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A 2.0 μg/m3 (2) N/A 40.0
 
March 27, 2020, 9 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A 4.0 μg/m3 (4) N/A 42.0
 
March 27, 2020, 8 p.m. 0.5 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A 7.0 μg/m3 (6) N/A 41.0
 
March 27, 2020, 7 p.m. 0.6 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A 7.0 μg/m3 (6) N/A 38.0
 
March 27, 2020, 6 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A 8.0 μg/m3 (7) N/A 38.0
 
March 27, 2020, 5 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A 10.0 μg/m3 (9) N/A 35.0
 
March 27, 2020, 4 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A 4.0 μg/m3 (4) N/A 34.0
 
March 27, 2020, 3 p.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 2.0 μg/m3 (2) N/A 31.0
 
March 27, 2020, 2 p.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A 2.0 μg/m3 (2) N/A 29.0
 
March 27, 2020, 1 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 3.0 μg/m3 (3) N/A 30.0
 
March 27, 2020, noon 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A 3.0 μg/m3 (3) N/A 30.0
 
March 27, 2020, 11 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A 1.0 μg/m3 (1) N/A 30.0
 
March 27, 2020, 10 a.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (29) N/A 4.0 μg/m3 (4) N/A 29.0
 
March 27, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) N/A 4.0
 
March 27, 2020, 8 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A 3.0 μg/m3 (3) N/A 28.0
 
March 27, 2020, 7 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (29) N/A 1.0 μg/m3 (1) N/A 29.0
 
March 27, 2020, 6 a.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A 2.0 μg/m3 (2) N/A 31.0
 
March 27, 2020, 5 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) N/A 32.0
 
March 27, 2020, 4 a.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) N/A 33.0
 
March 27, 2020, 3 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A -2.0 μg/m3 (0) N/A 33.0
 
March 27, 2020, 2 a.m. 0.4 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A -1.0 μg/m3 (0) N/A 35.0
 
March 27, 2020, 1 a.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A 1.0 μg/m3 (1) N/A 37.0
 
March 27, 2020, midnight 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A 0.0 μg/m3 (0) N/A 38.0
 
March 26, 2020, 11 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A -1.0 μg/m3 (0) N/A 38.0
 
March 26, 2020, 10 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A -1.0 μg/m3 (0) N/A 37.0
 
March 26, 2020, 9 p.m. 0.6 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A 0.0 μg/m3 (0) N/A 37.0
 
March 26, 2020, 8 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A 5.0 μg/m3 (5) N/A 37.0
 
March 26, 2020, 7 p.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) N/A 36.0
 
March 26, 2020, 6 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A 5.0 μg/m3 (5) N/A 35.0
 
March 26, 2020, 5 p.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A 3.0 μg/m3 (3) N/A 35.0
 
March 26, 2020, 4 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) N/A 33.0
 
March 26, 2020, 3 p.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 4.0 μg/m3 (4) N/A 31.0
 
March 26, 2020, 2 p.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 4.0 μg/m3 (4) N/A 30.0
 
March 26, 2020, 1 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 5.0 μg/m3 (5) N/A 36.0
 
March 26, 2020, noon 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A 7.0 μg/m3 (6) N/A 37.0
 
March 26, 2020, 11 a.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 6.0 μg/m3 (5) N/A 36.0
 
March 26, 2020, 10 a.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 2.0 μg/m3 (2) N/A 36.0
 
March 26, 2020, 9 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 3.0 μg/m3 (3) N/A 36.0
 
March 26, 2020, 8 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 4.0 μg/m3 (4) N/A 36.0
 
March 26, 2020, 7 a.m. 1.1 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A 3.0 μg/m3 (3) N/A 27.0
 
March 26, 2020, 6 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) N/A 32.0
 
March 26, 2020, 5 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) N/A 33.0
 
March 26, 2020, 4 a.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A 5.0 μg/m3 (5) N/A 35.0
 
March 26, 2020, 3 a.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A 1.0 μg/m3 (1) N/A 35.0
 
March 26, 2020, 2 a.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A -4.0 μg/m3 (0) N/A 35.0
 
March 26, 2020, 1 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A -3.0 μg/m3 (0) N/A 35.0
 
March 26, 2020, midnight 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A -1.0 μg/m3 (0) N/A 35.0
 
March 25, 2020, 11 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A 3.0 μg/m3 (3) N/A 37.0
 
March 25, 2020, 10 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A 7.0 μg/m3 (6) N/A 35.0
 
March 25, 2020, 9 p.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A 9.0 μg/m3 (8) N/A 35.0
 
March 25, 2020, 8 p.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A 5.0 μg/m3 (5) N/A 35.0
 
March 25, 2020, 7 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A 6.0 μg/m3 (5) N/A 36.0
 
March 25, 2020, 6 p.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A 10.0 μg/m3 (9) N/A 35.0
 
March 25, 2020, 5 p.m. 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A 7.0 μg/m3 (6) N/A 32.0
 
March 25, 2020, 4 p.m. 2.1 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A 7.0 μg/m3 (6) N/A 28.0
 
March 25, 2020, 3 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A 3.0 μg/m3 (3) N/A 27.0
 
March 25, 2020, 2 p.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 0.0 μg/m3 (0) N/A 31.0
 
March 25, 2020, 1 p.m. 1.2 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A 1.0 μg/m3 (1) N/A 32.0