AQSQID: 150011012

Site Name: Kona

Location: Kealakekua, HI

Reporting: True, Located: True

Current AQI: 17.0

Kealakekua HI, US: 19.5097, -155.9133

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 24, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 24, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 24, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 24, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 24, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 24, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 24, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 24, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
March 24, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 24, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 24, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 24, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 24, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 24, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 24, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 23, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 23, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 23, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 23, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 23, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 23, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 23, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 23, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 23, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 23, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 23, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 23, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 23, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 23, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 23, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 23, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 23, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 23, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 23, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 23, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 23, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 23, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 23, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 23, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 22, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 22, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 22, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 22, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 22, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 0.0 μg/m3 (0) N/A
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 0.0 μg/m3 (0) N/A
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 22, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 0.0 μg/m3 (0) N/A
March 22, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 22, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 22, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 22, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 22, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 22, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 22, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 22, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 22, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 22, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 22, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 22, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 22, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 21, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 21, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 21, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 21, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 21, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 21, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 21, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 21, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 21, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 21, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 21, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 21, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 21, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 21, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 21, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 21, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 21, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 21, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
March 21, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 21, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 21, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 21, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 20, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 20, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 0.0 μg/m3 (0) N/A
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 22.0 μg/m3 (71) 71.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 18, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 17, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 17, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 17, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 17, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 17, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 17, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 17, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
March 17, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.0 μg/m3 (0) 1.0